Johannes Jacob Pieter Kastelein SEC EDGAR Filings (CIK 0002000389)

SEC EDGAR filings, ownership reports, and insider transactions for Johannes Jacob Pieter Kastelein.

Business address
C/O Newamsterdam Pharma Company N.V., Gooimeer 2 35, Naarden, Netherlands, 1411 DC
Top holdings (ownership)
NAMS
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Johannes Jacob Pieter Kastelein has filed 16 SEC EDGAR filings since 29 Dec 2023

Latest Filings

Recent SEC filings for Johannes Jacob Pieter Kastelein including 4, 144, 3.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 4 09 Mar 2026 05 Mar 2026 001-41562
144 Open 144 document View SEC filing for 144 05 Mar 2026
4 Open 4 document View SEC filing for 4 4 24 Feb 2026 20 Feb 2026 001-41562
144 Open 144 document View SEC filing for 144 20 Feb 2026
4 Open 4 document View SEC filing for 4 4 07 Jan 2026 05 Jan 2026 001-41562
144 Open 144 document View SEC filing for 144 05 Jan 2026
4 Open 4 document View SEC filing for 4 4 25 Aug 2025 21 Aug 2025 001-41562
144 Open 144 document View SEC filing for 144 25 Aug 2025
4 Open 4 document View SEC filing for 4 4 28 Mar 2025 26 Mar 2025 001-41562
4 Open 4 document View SEC filing for 4 4 26 Mar 2025 24 Mar 2025 001-41562
4 Open 4 document View SEC filing for 4 4 07 Jan 2025 07 Jan 2025 001-41562
4 Open 4 document View SEC filing for 4 4 06 Jan 2025 02 Jan 2025 001-41562
4 Open 4 document View SEC filing for 4 4 27 Mar 2024 26 Mar 2024 001-41562
144 Open 144 document View SEC filing for 144 26 Mar 2024
4 Open 4 document View SEC filing for 4 4 03 Jan 2024 01 Jan 2024 001-41562
3 Open 3 document View SEC filing for 3 3 29 Dec 2023 29 Dec 2023 001-41562

About this filer

Johannes Jacob Pieter Kastelein files with the SEC under CIK 0002000389. This page aggregates EDGAR filings and related ownership activity.

See reporting owner transactions.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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