---
title: "Chester, Chi-Yun Koo — Ownership Dossier"
canonical: https://whiteintel.dev/entity/195f4c50-0cbd-509e-8fa9-2c26ba01e5cb
json: https://whiteintel.dev/api/public/dossier/195f4c50-0cbd-509e-8fa9-2c26ba01e5cb
identifier: icij:icijol-80508
jurisdiction: TW
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Chester, Chi-Yun Koo

**Type:** Organization  
**Jurisdiction:** TW  
**Identifier:** `icij:icijol-80508`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/195f4c50-0cbd-509e-8fa9-2c26ba01e5cb  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/195f4c50-0cbd-509e-8fa9-2c26ba01e5cb  

## Ownership & control

### Holdings / subsidiaries

- **Keystone Venture Management Corp.** (shareholder of) — https://whiteintel.dev/entity/9684dfc0-94b1-5d9d-bc1b-88598c6e1fe2
- **ESTAR CABLE LTD.** (shareholder of) — https://whiteintel.dev/entity/9ea22ca9-ac61-5da6-ba1f-048958a83978

## Provenance

- ICIJ Offshore Leaks — https://offshoreleaks.icij.org/nodes/80508

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Chester, Chi-Yun Koo**. Human view: https://whiteintel.dev/entity/195f4c50-0cbd-509e-8fa9-2c26ba01e5cb · Structured JSON: https://whiteintel.dev/api/public/dossier/195f4c50-0cbd-509e-8fa9-2c26ba01e5cb._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._