---
title: "Anton F. Zumstein — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d3744daa-91be-58c2-98ee-4d727b4cfa91
json: https://whiteintel.dev/api/public/dossier/d3744daa-91be-58c2-98ee-4d727b4cfa91
identifier: icij:icijol-82759
jurisdiction: CH
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Anton F. Zumstein

**Type:** Organization  
**Jurisdiction:** CH  
**Identifier:** `icij:icijol-82759`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/d3744daa-91be-58c2-98ee-4d727b4cfa91  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d3744daa-91be-58c2-98ee-4d727b4cfa91  

## Ownership & control

### Holdings / subsidiaries

- **Ravignan, Inc.** (director of) — https://whiteintel.dev/entity/b7a76a22-c858-5f5b-82f1-0e0dafed90f4
- **Ravignan, Inc.** (secretary of) — https://whiteintel.dev/entity/b7a76a22-c858-5f5b-82f1-0e0dafed90f4

## Provenance

- ICIJ Offshore Leaks — https://offshoreleaks.icij.org/nodes/82759

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Anton F. Zumstein**. Human view: https://whiteintel.dev/entity/d3744daa-91be-58c2-98ee-4d727b4cfa91 · Structured JSON: https://whiteintel.dev/api/public/dossier/d3744daa-91be-58c2-98ee-4d727b4cfa91._

_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"._