---
title: "GULFMARK OFFSHORE INC — Ownership Dossier"
canonical: https://whiteintel.dev/entity/e4c5124f-5bbc-541b-8a09-51f61edd0e6b
json: https://whiteintel.dev/api/public/dossier/e4c5124f-5bbc-541b-8a09-51f61edd0e6b
identifier: sec:0001030749
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# GULFMARK OFFSHORE INC

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001030749`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/e4c5124f-5bbc-541b-8a09-51f61edd0e6b  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/e4c5124f-5bbc-541b-8a09-51f61edd0e6b  

## Ownership & control

### Owners / controllers

- **LEHMAN BROTHERS HOLDINGS INC** (tenpercentowner) — https://whiteintel.dev/entity/466d88b7-93ed-5aac-b7aa-caec9f7ea0f9
- **RAGING CAPITAL MANAGEMENT, LLC** (tenpercentowner) — https://whiteintel.dev/entity/6c91675f-53fe-521b-a2ef-863e7e3e3085
- **Renegade Swish, LLC** (tenpercentowner) — https://whiteintel.dev/entity/c246c26c-a783-5e89-abd9-3cf281ef0e40
- **RAYNOR GEOFFREY** (tenpercentowner) — https://whiteintel.dev/entity/c8a907ef-0ef4-5c66-86ff-95a46d9542a9
- **MARTIN WILLIAM C** (tenpercentowner) — https://whiteintel.dev/entity/fc276016-6f0c-58b2-9c71-ab5307d4eff5
- **CAPTAIN Q, LLC** (tenpercentowner) — https://whiteintel.dev/entity/7e42251c-3990-5ff1-b18e-1d322314ee54
- **TIDEWATER INC** (tenpercentowner) — https://whiteintel.dev/entity/c3476628-ef0d-5629-ade8-61f9037fafff
- **RAGING CAPITAL FUND (QP), LP** (tenpercentowner) — https://whiteintel.dev/entity/d74292c9-d087-5009-b328-bfd94395ed14
- **RAGING CAPITAL OFFSHORE FUND, LTD.** (tenpercentowner) — https://whiteintel.dev/entity/51348e2a-7fe1-5d08-bf8e-d2d9c1595646

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

A **367-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.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **GULFMARK OFFSHORE INC**. Human view: https://whiteintel.dev/entity/e4c5124f-5bbc-541b-8a09-51f61edd0e6b · Structured JSON: https://whiteintel.dev/api/public/dossier/e4c5124f-5bbc-541b-8a09-51f61edd0e6b._

_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"._