Latest filing published 25 Aug 2026 for NewAmsterdam Pharma Company N.V., €6.0M.
Insider track record
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
No signal scores available.
Kastelein Johannes Jacob Pieter: trading record in brief
Kastelein Johannes Jacob Pieter is a declared insider of NewAmsterdam Pharma Co N.V., with filings sourced from SEC (Form 4). We count 2 filings; the first trade dates from 24 August 2026 and the latest from 25 August 2026.
The filings describe grants, exercises and other transfers rather than trades on the open market. Compensation-driven entries like these are tracked, but they say little about how insiders judge the share price.
The latest filing, published on 25 August 2026, reports a transaction of €6.0M in NewAmsterdam Pharma Co N.V. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.
Companies and markets linked to Kastelein Johannes Jacob Pieter
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
- 250,000 shares@ US$27.87Ordinary SharesSEC144:0001968582-26-000878
- 125,000 shares@ US$27.87100.0% of flowOrdinary SharesSEC144:0001968582-26-000868
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