---
title: "ZELEFSKY MICHAEL J — Ownership Dossier"
canonical: https://whiteintel.dev/entity/19db4841-6ad2-57a5-bcc7-b5ff9e8db1fa
json: https://whiteintel.dev/api/public/dossier/19db4841-6ad2-57a5-bcc7-b5ff9e8db1fa
identifier: sec:0001266801
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ZELEFSKY MICHAEL J

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001266801`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/19db4841-6ad2-57a5-bcc7-b5ff9e8db1fa  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/19db4841-6ad2-57a5-bcc7-b5ff9e8db1fa  

## Ownership & control

### Holdings / subsidiaries

- **MUSTANG BIO, INC.** (director) — https://whiteintel.dev/entity/3fc122f9-6400-5305-b3a1-eb2ec007494a

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ZELEFSKY MICHAEL J**. Human view: https://whiteintel.dev/entity/19db4841-6ad2-57a5-bcc7-b5ff9e8db1fa · Structured JSON: https://whiteintel.dev/api/public/dossier/19db4841-6ad2-57a5-bcc7-b5ff9e8db1fa._

_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"._