---
title: "DUGAN THOMAS J — Ownership Dossier"
canonical: https://whiteintel.dev/entity/311fcb82-e8a9-5739-849a-d1aefb6a4d87
json: https://whiteintel.dev/api/public/dossier/311fcb82-e8a9-5739-849a-d1aefb6a4d87
identifier: sec:0001227576
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# DUGAN THOMAS J

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001227576`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/311fcb82-e8a9-5739-849a-d1aefb6a4d87  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/311fcb82-e8a9-5739-849a-d1aefb6a4d87  

## Ownership & control

### Holdings / subsidiaries

- **HANDHELD ULTRASOUND SYSTEMS INC** (officer) — https://whiteintel.dev/entity/e4a2c83a-d253-5732-9fec-df43be1e1119
- **RITA MEDICAL SYSTEMS INC** (director) — https://whiteintel.dev/entity/877303ca-4dec-528f-9f49-d423df3ccc70

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **DUGAN THOMAS J**. Human view: https://whiteintel.dev/entity/311fcb82-e8a9-5739-849a-d1aefb6a4d87 · Structured JSON: https://whiteintel.dev/api/public/dossier/311fcb82-e8a9-5739-849a-d1aefb6a4d87._

_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"._