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 Chih Chang Yu.

Business address: 9 F., No. 28, Wencheng Rd., Beitou Dist.,, Taipei City, 112
Top holdings (ownership): OWLS

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Chih Chang Yu has filed 1 SEC EDGAR filings since 05 Mar 2026

Recent SEC filings for Chih Chang Yu including 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
3	Open 3 document	View SEC filing for 3	PRIMARY DOCUMENT	05 Mar 2026	16 Oct 2025	001-42858

Chih Chang Yu files with the SEC under CIK 0002116299. 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.