---
title: "CENTURY ALUMINUM CO — Ownership Dossier"
canonical: https://whiteintel.dev/entity/e81e159c-925a-5556-9ed4-28816acbc167
json: https://whiteintel.dev/api/public/dossier/e81e159c-925a-5556-9ed4-28816acbc167
identifier: sec:0000949157
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# CENTURY ALUMINUM CO

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0000949157`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/e81e159c-925a-5556-9ed4-28816acbc167  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/e81e159c-925a-5556-9ed4-28816acbc167  

## Ownership & control

### Owners / controllers

- **Glencore plc** (10% owner) — https://whiteintel.dev/entity/bc26eb02-2b7f-5053-b5ca-6da36c978cc7
- **GLENCORE INTERNATIONAL AG** (10% owner) — https://whiteintel.dev/entity/bfd4e64c-1b4c-5d3f-957c-46393f0687fd
- **Glencore AG** (10% owner) — https://whiteintel.dev/entity/509cc98d-bdc8-5f2c-a422-bb0e60ab721f
- **GLENCORE INTERNATIONAL AG** (tenpercentowner) — https://whiteintel.dev/entity/bfd4e64c-1b4c-5d3f-957c-46393f0687fd
- **Glencore plc** (tenpercentowner) — https://whiteintel.dev/entity/bc26eb02-2b7f-5053-b5ca-6da36c978cc7
- **Glencore AG** (tenpercentowner) — https://whiteintel.dev/entity/509cc98d-bdc8-5f2c-a422-bb0e60ab721f
- **RYFOLD TRUST** (tenpercentowner) — https://whiteintel.dev/entity/f7b4793c-bb27-5fae-9f7a-67d3f750f0ff
- **RYFOLD LTD** (tenpercentowner) — https://whiteintel.dev/entity/86c4bc0c-ecf4-53ac-9ef7-5f281fe94be9
- **GIVOLON LTD** (tenpercentowner) — https://whiteintel.dev/entity/64653edb-fc85-58c2-b15c-2de3ecb2a09f
- **ESTERA TRUST (JERSEY) LTD** (tenpercentowner) — https://whiteintel.dev/entity/5477a3e8-876e-5ce3-98e4-f205b3185b7e
- **GLENCORE HOLDING AG** (tenpercentowner) — https://whiteintel.dev/entity/041e039b-15b5-590a-ac99-f0c3bac23e41
- **GLENCORE INVESTMENT PTY LTD.** (tenpercentowner) — https://whiteintel.dev/entity/1dcef030-7670-5d94-9100-deb2ed081cd0

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

A **83-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.

## 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 **CENTURY ALUMINUM CO** — https://whiteintel.dev/entity/e81e159c-925a-5556-9ed4-28816acbc167 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **CENTURY ALUMINUM CO**. Human view: https://whiteintel.dev/entity/e81e159c-925a-5556-9ed4-28816acbc167 · Structured JSON: https://whiteintel.dev/api/public/dossier/e81e159c-925a-5556-9ed4-28816acbc167._

_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"._