---
title: "LANGAN JOHN G — Ownership Dossier"
canonical: https://whiteintel.dev/entity/54019c8f-6203-513e-9879-82c4a4e1b024
json: https://whiteintel.dev/api/public/dossier/54019c8f-6203-513e-9879-82c4a4e1b024
identifier: sec:0001686108
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# LANGAN JOHN G

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001686108`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/54019c8f-6203-513e-9879-82c4a4e1b024  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/54019c8f-6203-513e-9879-82c4a4e1b024  

## Ownership & control

### Holdings / subsidiaries

- **VERSUM MATERIALS, INC.** (officer) — https://whiteintel.dev/entity/7755acb6-5d79-5b5c-847f-4d97c6394add

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **LANGAN JOHN G**. Human view: https://whiteintel.dev/entity/54019c8f-6203-513e-9879-82c4a4e1b024 · Structured JSON: https://whiteintel.dev/api/public/dossier/54019c8f-6203-513e-9879-82c4a4e1b024._

_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"._