Johannes Jacob Pieter Kastelein - Insider Trading & Ownership

Location
C/O Newamsterdam Pharma Company N.V., Gooimeer 2 35, Naarden, Netherlands
Summary
The estimated net worth of Johannes Jacob Pieter Kastelein is at least $1.77M dollars as of August 25, 2025. Johannes Jacob Pieter Kastelein is the Chief Scientific Officer, Director of NewAmsterdam Pharma Co N.V. and owns shares of NewAmsterdam Pharma Co N.V. (NAMS) stock worth about $1.77M.
Signature
/s/ Louise Kooij by Power of Attorney for Johannes Jacob Pieter Kastelein
All Insider Reports
All Insider Reports

Ownership of Johannes Jacob Pieter Kastelein

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
NAMS, NAMSW NewAmsterdam Pharma Co N.V. Chief Scientific Officer, Director $1.77M -$2.47M -58.3% Aug 21, 2025

Insider Transactions Reported by Johannes Jacob Pieter Kastelein:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.