---
title: "PORWOLL JOE — Ownership Dossier"
canonical: https://whiteintel.dev/entity/9765abc4-e9d7-5196-87a9-723bb473d7f5
json: https://whiteintel.dev/api/public/dossier/9765abc4-e9d7-5196-87a9-723bb473d7f5
identifier: sec:0001210653
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# PORWOLL JOE

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001210653`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/9765abc4-e9d7-5196-87a9-723bb473d7f5  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/9765abc4-e9d7-5196-87a9-723bb473d7f5  

## Ownership & control

### Holdings / subsidiaries

- **SIGMA ALDRICH CORP** (other) — https://whiteintel.dev/entity/8f08a611-6a79-5795-adb6-95b83d2ed5ab
- **SIGMA ALDRICH CORP** (officer) — https://whiteintel.dev/entity/8f08a611-6a79-5795-adb6-95b83d2ed5ab

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **PORWOLL JOE**. Human view: https://whiteintel.dev/entity/9765abc4-e9d7-5196-87a9-723bb473d7f5 · Structured JSON: https://whiteintel.dev/api/public/dossier/9765abc4-e9d7-5196-87a9-723bb473d7f5._

_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"._