---
title: "ONEILL THOMAS H JR — Ownership Dossier"
canonical: https://whiteintel.dev/entity/cd5dcc4e-3154-5a2a-a3ad-3bf2b8b4e463
json: https://whiteintel.dev/api/public/dossier/cd5dcc4e-3154-5a2a-a3ad-3bf2b8b4e463
identifier: sec:0001313879
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ONEILL THOMAS H JR

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001313879`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/cd5dcc4e-3154-5a2a-a3ad-3bf2b8b4e463  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/cd5dcc4e-3154-5a2a-a3ad-3bf2b8b4e463  

## Ownership & control

### Holdings / subsidiaries

- **UNION DRILLING INC** (director) — https://whiteintel.dev/entity/00d90d16-6ca4-5bf4-a63c-ae3127e8bc04
- **UNION DRILLING INC** (tenpercentowner) — https://whiteintel.dev/entity/00d90d16-6ca4-5bf4-a63c-ae3127e8bc04

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ONEILL THOMAS H JR**. Human view: https://whiteintel.dev/entity/cd5dcc4e-3154-5a2a-a3ad-3bf2b8b4e463 · Structured JSON: https://whiteintel.dev/api/public/dossier/cd5dcc4e-3154-5a2a-a3ad-3bf2b8b4e463._

_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"._