---
title: "QUIGLEY JOHN E — Ownership Dossier"
canonical: https://whiteintel.dev/entity/4bcbdb41-9f5d-5ace-a0d7-1d87b40463fa
json: https://whiteintel.dev/api/public/dossier/4bcbdb41-9f5d-5ace-a0d7-1d87b40463fa
identifier: sec:0001243756
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# QUIGLEY JOHN E

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001243756`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/4bcbdb41-9f5d-5ace-a0d7-1d87b40463fa  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/4bcbdb41-9f5d-5ace-a0d7-1d87b40463fa  

## Ownership & control

### Holdings / subsidiaries

- **MATRITECH INC/DE/** (officer) — https://whiteintel.dev/entity/9b39bb57-3bb8-54d9-b435-77e3ab273a22

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **QUIGLEY JOHN E**. Human view: https://whiteintel.dev/entity/4bcbdb41-9f5d-5ace-a0d7-1d87b40463fa · Structured JSON: https://whiteintel.dev/api/public/dossier/4bcbdb41-9f5d-5ace-a0d7-1d87b40463fa._

_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"._