---
title: "OILSERV LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/3f38791b-9fc3-5d55-9800-e85d7a3e50c2
json: https://whiteintel.dev/api/public/dossier/3f38791b-9fc3-5d55-9800-e85d7a3e50c2
identifier: icij:icijol-10129701
jurisdiction: CH
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# OILSERV LIMITED

**Type:** Company  
**Jurisdiction:** CH  
**Identifier:** `icij:icijol-10129701`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/3f38791b-9fc3-5d55-9800-e85d7a3e50c2  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/3f38791b-9fc3-5d55-9800-e85d7a3e50c2  

## Ownership & control

### Owners / controllers

- **Cartigny Secretaries Ltd.** (shareholder of) — https://whiteintel.dev/entity/dfc012f1-59e2-579c-a735-51181851b3ac
- **Cartigny Investors Ltd.** (shareholder of) — https://whiteintel.dev/entity/3f7577c4-862a-50c1-b7f6-bf148818af73
- **MAYO SECRETARIES LIMITED** (shareholder of) — https://whiteintel.dev/entity/31183d83-9c6a-5619-b754-0f3e66941a58
- **MAYO NOMINEES LIMITED** (shareholder of) — https://whiteintel.dev/entity/3a6c50c3-206e-5623-903e-7d309db4f0a7

### UBO chain (walk to the ultimate owner)

A **4-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

## Exposure (derived from the ownership graph)

**2** owners upstream in this entity's ownership/control chain are flagged — a sanctions hit or a secrecy jurisdiction — an investigative lead by resolved identity, not a legal determination. The contributing parties and the hop-by-hop path unlock with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

## Provenance

- ICIJ Offshore Leaks — https://offshoreleaks.icij.org/nodes/10129701

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **OILSERV LIMITED**. Human view: https://whiteintel.dev/entity/3f38791b-9fc3-5d55-9800-e85d7a3e50c2 · Structured JSON: https://whiteintel.dev/api/public/dossier/3f38791b-9fc3-5d55-9800-e85d7a3e50c2._

_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"._