---
title: "MADISON JOHN A — Ownership Dossier"
canonical: https://whiteintel.dev/entity/80e7ff0b-fd02-5405-9609-4429782fa3e9
json: https://whiteintel.dev/api/public/dossier/80e7ff0b-fd02-5405-9609-4429782fa3e9
identifier: sec:0001320489
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MADISON JOHN A

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001320489`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/80e7ff0b-fd02-5405-9609-4429782fa3e9  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/80e7ff0b-fd02-5405-9609-4429782fa3e9  

## Ownership & control

### Holdings / subsidiaries

- **KAYDON CORP** (officer) — https://whiteintel.dev/entity/87d3cfed-855c-5a82-a7b4-ed625508a21e

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MADISON JOHN A**. Human view: https://whiteintel.dev/entity/80e7ff0b-fd02-5405-9609-4429782fa3e9 · Structured JSON: https://whiteintel.dev/api/public/dossier/80e7ff0b-fd02-5405-9609-4429782fa3e9._

_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"._