---
title: "A. M. CASTLE & CO. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/c3d0f8cd-62c9-59a5-b750-a8c3f4e652e5
json: https://whiteintel.dev/api/public/dossier/c3d0f8cd-62c9-59a5-b750-a8c3f4e652e5
identifier: sec:0000018172
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# A. M. CASTLE & CO.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0000018172`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/c3d0f8cd-62c9-59a5-b750-a8c3f4e652e5  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/c3d0f8cd-62c9-59a5-b750-a8c3f4e652e5  

## Ownership & control

### Owners / controllers

- **HERBERT PATRICK J III** (tenpercentowner) — https://whiteintel.dev/entity/dfb66daa-b30b-52d8-b419-6e9cd62abfb2
- **MELLIN JONATHAN** (tenpercentowner) — https://whiteintel.dev/entity/7524b41d-cfb2-52a7-b170-82869f238afe
- **SGF, LLC** (tenpercentowner) — https://whiteintel.dev/entity/6d2198be-49fc-54f6-a5e0-7f9dbc2d4ed6
- **WHITEBOX ADVISORS LLC** (tenpercentowner) — https://whiteintel.dev/entity/6334c600-b410-5c23-892c-f6cbb731d010
- **WOLVERINE HOLDINGS, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/4a4d776b-c114-5d0e-8f82-d2335f8be35f
- **WOLVERINE ASSET MANAGEMENT LLC** (tenpercentowner) — https://whiteintel.dev/entity/33e96eb3-2955-5eff-a538-2bca44bc37b6
- **Corre Partners Management, LLC** (tenpercentowner) — https://whiteintel.dev/entity/a9458939-90d2-5f63-951d-dc3e9693bde5
- **WOLVERINE TRADING PARTNERS, INC.** (tenpercentowner) — https://whiteintel.dev/entity/f3d5b27b-51a0-5e1f-b015-d084d2cbaa97
- **HIGHBRIDGE CAPITAL MANAGEMENT LLC** (tenpercentowner) — https://whiteintel.dev/entity/bdac6d01-58dd-53a3-a60c-9b6c04485d72
- **WHITEBOX COMBINED PARTNERS LP** (tenpercentowner) — https://whiteintel.dev/entity/77ec6e22-c342-5875-a7ee-56d1f160720d
- **WHITEBOX GENERAL PARTNER LLC** (tenpercentowner) — https://whiteintel.dev/entity/ca3953aa-a868-56b6-a4e5-c084f04765d4
- **1992 MSF INTERNATIONAL LTD.** (tenpercentowner) — https://whiteintel.dev/entity/6ae4acc7-4deb-513d-becc-c62f3dbe35af
- **FOM CORP** (tenpercentowner) — https://whiteintel.dev/entity/4eac9562-8260-5f25-8ede-ec417256ea47
- **DONNELLEY REUBEN SIMPSON** (tenpercentowner) — https://whiteintel.dev/entity/ec676942-d7ee-599f-b78e-9b506144d0e7
- **WB & CO** (tenpercentowner) — https://whiteintel.dev/entity/b84daac4-dae4-5c17-8205-2c60cefe3286
- **BELLICK ROBERT** (tenpercentowner) — https://whiteintel.dev/entity/49ced860-2882-57c2-89f5-9f209d5a7f38
- **GUST CHRISTOPHER** (tenpercentowner) — https://whiteintel.dev/entity/b01defc9-da0a-5873-b521-75fae7af8170
- **Stone House Capital Management, LLC** (tenpercentowner) — https://whiteintel.dev/entity/a001f1f2-83ab-5f5d-b905-f8442e167d28
- **RAGING CAPITAL MANAGEMENT, LLC** (tenpercentowner) — https://whiteintel.dev/entity/6c91675f-53fe-521b-a2ef-863e7e3e3085
- **MARTIN WILLIAM C** (tenpercentowner) — https://whiteintel.dev/entity/fc276016-6f0c-58b2-9c71-ab5307d4eff5
- **SH Capital Partners, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/3c7ef7f7-d15b-52a0-96db-545fc480617a
- **Cohen Mark Alexander** (tenpercentowner) — https://whiteintel.dev/entity/5374b344-e9a3-585e-9da1-e364ea91c622
- **RAGING CAPITAL MASTER FUND, LTD.** (tenpercentowner) — https://whiteintel.dev/entity/be26ee42-d25c-5568-a072-87aabb1d3d2f

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

A **109-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 **A. M. CASTLE & CO.** — https://whiteintel.dev/entity/c3d0f8cd-62c9-59a5-b750-a8c3f4e652e5 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **A. M. CASTLE & CO.**. Human view: https://whiteintel.dev/entity/c3d0f8cd-62c9-59a5-b750-a8c3f4e652e5 · Structured JSON: https://whiteintel.dev/api/public/dossier/c3d0f8cd-62c9-59a5-b750-a8c3f4e652e5._

_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"._