WENDELL WIERENGA SEC EDGAR Filings (CIK 0001239956)

SEC EDGAR filings, ownership reports, and insider transactions for WENDELL WIERENGA.

Business address
C/O Ciphergen Biosystems Inc, 6611 Dumbarton Circle, Fremont, CA, 94555
Top holdings (ownership)
CYTK
⭐ Add to watchlist ⭐
Get insider transactions for this reporting owner
WENDELL WIERENGA has filed 17 SEC EDGAR filings since 07 Jun 2004

Latest Filings

Recent SEC filings for WENDELL WIERENGA 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 PRIMARY DOCUMENT 16 Jan 2026 15 Jan 2026 000-50633
4 Open 4 document View SEC filing for 4 4 06 Jan 2026 02 Jan 2026 001-40739
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Dec 2025 22 Dec 2025 000-50633
144 Open 144 document View SEC filing for 144 22 Dec 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Oct 2025 27 Oct 2025 000-50633
144 Open 144 document View SEC filing for 144 27 Oct 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Oct 2025 15 Oct 2025 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Jan 2025 13 Jan 2025 001-40739
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Jan 2024 04 Jan 2024 001-40739
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Oct 2022 06 Oct 2022 001-40739
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Jul 2022 07 Jul 2022 001-40739
4 Open 4 document View SEC filing for 4 08 Apr 2022 07 Apr 2022 001-40739
4 Open 4 document View SEC filing for 4 05 Jan 2022 03 Jan 2022 001-40739
4 Open 4 document View SEC filing for 4 17 Aug 2021 17 Aug 2021 001-40739
3 Open 3 document View SEC filing for 3 12 Aug 2021 12 Aug 2021 001-40739

About this filer

WENDELL WIERENGA files with the SEC under CIK 0001239956. 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.

Related pages