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 Hong Yu.

Business address: C/O Biostage, Inc. 84 October Hill Road, Holliston, MA, 01746
Top holdings (ownership): BSTG

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Hong Yu has filed 7 SEC EDGAR filings since 07 Jun 2018

Recent SEC filings for Hong Yu including 4, 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
4	Open 4 document	View SEC filing for 4		09 Dec 2022	07 Dec 2022	001-35853
4	Open 4 document	View SEC filing for 4	OWNERSHIP DOCUMENT	20 May 2022	18 May 2022	001-35853
4	Open 4 document	View SEC filing for 4	OWNERSHIP DOCUMENT	03 Jan 2022	29 Dec 2021	001-35853
4	Open 4 document	View SEC filing for 4	FORM 4	18 Jun 2018	14 Jun 2018	001-35853
4	Open 4 document	View SEC filing for 4	FORM 4	14 Jun 2018	12 Jun 2018	001-35853
4	Open 4 document	View SEC filing for 4	FORM 4	07 Jun 2018	29 May 2018	001-35853
3	Open 3 document	View SEC filing for 3	FORM 3	07 Jun 2018	29 May 2018	001-35853

Hong Yu files with the SEC under CIK 0001743047. 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.