---
title: "Idemitsu Kosan Co., Ltd. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/cdff3d1c-ca87-40ee-836f-63485603a8fc
json: https://whiteintel.dev/api/public/dossier/cdff3d1c-ca87-40ee-836f-63485603a8fc
identifier: gb-coh:0100-01-011318
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Idemitsu Kosan Co., Ltd.

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `gb-coh:0100-01-011318`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/cdff3d1c-ca87-40ee-836f-63485603a8fc  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/cdff3d1c-ca87-40ee-836f-63485603a8fc  

## Ownership & control

### Holdings / subsidiaries

- **ROCKROSE UKCS4 LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/303a0d98-5b30-5ccb-a5ae-dc7c64c0158a
- **Idemitsu Kosan Co., Ltd.** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/28318c6d-297d-5016-88d7-9ae76731953b
- **Idemitsu Kosan Co., Ltd.** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/02b20d17-1c1b-543c-8d6c-248997f4c16a

## 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 **Idemitsu Kosan Co., Ltd.** — https://whiteintel.dev/entity/cdff3d1c-ca87-40ee-836f-63485603a8fc · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Idemitsu Kosan Co., Ltd.**. Human view: https://whiteintel.dev/entity/cdff3d1c-ca87-40ee-836f-63485603a8fc · Structured JSON: https://whiteintel.dev/api/public/dossier/cdff3d1c-ca87-40ee-836f-63485603a8fc._

_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"._