---
title: "O'CONNOR WILLIAM BERNARD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/a16f9202-6fd9-5cd8-86d7-fac85a8d12e2
json: https://whiteintel.dev/api/public/dossier/a16f9202-6fd9-5cd8-86d7-fac85a8d12e2
identifier: sec:0001427141
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# O'CONNOR WILLIAM BERNARD

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001427141`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/a16f9202-6fd9-5cd8-86d7-fac85a8d12e2  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/a16f9202-6fd9-5cd8-86d7-fac85a8d12e2  

## Ownership & control

### Holdings / subsidiaries

- **MEDICINES CO /DE** (officer) — https://whiteintel.dev/entity/37e9c771-3546-51bb-b16f-77f508c63abd

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **O'CONNOR WILLIAM BERNARD**. Human view: https://whiteintel.dev/entity/a16f9202-6fd9-5cd8-86d7-fac85a8d12e2 · Structured JSON: https://whiteintel.dev/api/public/dossier/a16f9202-6fd9-5cd8-86d7-fac85a8d12e2._

_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"._