---
title: "LANG JEFFREY — Ownership Dossier"
canonical: https://whiteintel.dev/entity/c44cd326-291e-5e43-82d3-ad123cd9c652
json: https://whiteintel.dev/api/public/dossier/c44cd326-291e-5e43-82d3-ad123cd9c652
identifier: sec:0001484378
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# LANG JEFFREY

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001484378`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/c44cd326-291e-5e43-82d3-ad123cd9c652  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/c44cd326-291e-5e43-82d3-ad123cd9c652  

## Ownership & control

### Holdings / subsidiaries

- **CECO ENVIRONMENTAL CORP** (officer) — https://whiteintel.dev/entity/132c47ae-c3b0-589d-8c69-62d71840ce98
- **CECO ENVIRONMENTAL CORP** (director) — https://whiteintel.dev/entity/132c47ae-c3b0-589d-8c69-62d71840ce98

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **LANG JEFFREY**. Human view: https://whiteintel.dev/entity/c44cd326-291e-5e43-82d3-ad123cd9c652 · Structured JSON: https://whiteintel.dev/api/public/dossier/c44cd326-291e-5e43-82d3-ad123cd9c652._

_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"._