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 Derek Yiyi Feng.

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Derek Yiyi Feng has filed 2 SEC EDGAR filings since 27 Jan 2012

Recent SEC filings for Derek Yiyi Feng including 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
3	Open 3 document	View SEC filing for 3		13 Jan 2022	10 Jan 2022	001-40259
3	Open 3 document	View SEC filing for 3	OWNERSHIP DOCUMENT	27 Jan 2012	17 Jan 2012	001-33771

Derek Yiyi Feng files with the SEC under CIK 0001540501. 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.