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 Chou.

Business address: C/O Passage Bio, Inc., 2005 Market Street, 39 Th Floor, Philadelphia, PA, 19103
Top holdings (ownership): PASG

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William Chou has filed 8 SEC EDGAR filings since 12 Oct 2022

Recent SEC filings for William Chou 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		12 Jan 2026	08 Jan 2026	001-39231
144	Open 144 document	View SEC filing for 144		09 Jan 2026
4	Open 4 document	View SEC filing for 4		29 Dec 2025	15 Jan 2025	001-39231
4	Open 4 document	View SEC filing for 4		18 Mar 2025	15 Mar 2025	001-39231
4	Open 4 document	View SEC filing for 4		19 Mar 2024	15 Mar 2024	001-39231
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	05 Apr 2023	15 Mar 2023	001-39231
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	12 Oct 2022	10 Oct 2022	001-39231
3	Open 3 document	View SEC filing for 3	FORM 3 SUBMISSION	12 Oct 2022	10 Oct 2022	001-39231

William Chou files with the SEC under CIK 0001949693. 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.