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.

SEC EDGAR filings, ownership reports, and insider transactions for William Koppelmann.

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William Koppelmann has filed 5 SEC EDGAR filings since 30 Mar 2021

Recent SEC filings for William Koppelmann including 4, 3.

Form type	Document	Filing	Filing date	Reporting date	File number(s)
4	Open 4 document	View SEC filing for 4	15 Dec 2025	10 Dec 2025	000-56243
4	Open 4 document	View SEC filing for 4	11 Dec 2024	10 Dec 2024	000-56243
4	Open 4 document	View SEC filing for 4	06 Jul 2022	29 Jun 2022	000-56243
4	Open 4 document	View SEC filing for 4	11 Jan 2022	11 Jan 2022	000-56243
3	Open 3 document	View SEC filing for 3	30 Mar 2021	20 Mar 2021	000-56243

William Koppelmann files with the SEC under CIK 0001842150. This page aggregates EDGAR filings and related ownership activity.

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.