---
title: "CYRUS DE WECK — Ownership Dossier"
canonical: https://whiteintel.dev/entity/1501fc40-494a-58c1-9f2f-b239634849ff
json: https://whiteintel.dev/api/public/dossier/1501fc40-494a-58c1-9f2f-b239634849ff
identifier: icij:icijol-56105084
jurisdiction: CH
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# CYRUS DE WECK

**Type:** Organization  
**Jurisdiction:** CH  
**Identifier:** `icij:icijol-56105084`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/1501fc40-494a-58c1-9f2f-b239634849ff  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/1501fc40-494a-58c1-9f2f-b239634849ff  

## Ownership & control

### Holdings / subsidiaries

- **PORTSEA HOLDINGS (MALTA) LTD.** (director of) — https://whiteintel.dev/entity/b1a0cb03-031e-57fc-9147-45aac71a79db
- **PORTSEA HOLDINGS (MALTA) LTD.** (legal representative of) — https://whiteintel.dev/entity/b1a0cb03-031e-57fc-9147-45aac71a79db
- **PORTSEA HOLDINGS (MALTA) LTD.** (shareholder of) — https://whiteintel.dev/entity/b1a0cb03-031e-57fc-9147-45aac71a79db
- **PORTSEA AIFM MALTA LTD** (director of) — https://whiteintel.dev/entity/66cedea6-60b6-5a02-abf4-89b43f8ef92d
- **PORTSEA AIFM MALTA LTD** (legal representative of) — https://whiteintel.dev/entity/66cedea6-60b6-5a02-abf4-89b43f8ef92d
- **PORTSEA AIFM MALTA LTD** (shareholder of) — https://whiteintel.dev/entity/66cedea6-60b6-5a02-abf4-89b43f8ef92d
- **PORTSEA FUND SICAV PLC.** (shareholder of) — https://whiteintel.dev/entity/ce2b593a-e192-58ba-ade3-fe4a11adef4c
- **PORTSEA MASTER FUND SICAV LTD** (shareholder of) — https://whiteintel.dev/entity/1c0441ab-b50d-5593-9649-08c3bf286cfa

## Provenance

- ICIJ Offshore Leaks — https://offshoreleaks.icij.org/nodes/56105084

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **CYRUS DE WECK** — https://whiteintel.dev/entity/1501fc40-494a-58c1-9f2f-b239634849ff · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **CYRUS DE WECK**. Human view: https://whiteintel.dev/entity/1501fc40-494a-58c1-9f2f-b239634849ff · Structured JSON: https://whiteintel.dev/api/public/dossier/1501fc40-494a-58c1-9f2f-b239634849ff._

_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"._