---
title: "ENZON PHARMACEUTICALS, INC. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/370d8022-d716-539a-ac74-a5c1fc3e85ba
json: https://whiteintel.dev/api/public/dossier/370d8022-d716-539a-ac74-a5c1fc3e85ba
identifier: sec:0000727510
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ENZON PHARMACEUTICALS, INC.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0000727510`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/370d8022-d716-539a-ac74-a5c1fc3e85ba  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/370d8022-d716-539a-ac74-a5c1fc3e85ba  

## Ownership & control

### Owners / controllers

- **ICAHN ENTERPRISES HOLDINGS L.P.** (tenpercentowner) — https://whiteintel.dev/entity/86a8969d-e81a-518d-af77-217d7975b5f0
- **ICAHN ENTERPRISES G.P. INC.** (tenpercentowner) — https://whiteintel.dev/entity/5a11a2df-0e31-5cae-8b7a-ea5c9c23e0ec
- **ICAHN CARL C** (tenpercentowner) — https://whiteintel.dev/entity/c30756b1-cd8f-5d39-b809-d9358a5b42c4
- **COUCHMAN JONATHAN** (tenpercentowner) — https://whiteintel.dev/entity/600c53a4-9ae4-5a23-bd86-d2ffe763a18d
- **MYREXIS, INC.** (tenpercentowner) — https://whiteintel.dev/entity/53f41b7f-e9a7-5cc8-bf78-0c1bbbca939f
- **XSTELOS CORP.** (tenpercentowner) — https://whiteintel.dev/entity/48bc0658-efd6-5c89-a794-36f47c6e4203
- **COUCHMAN FAMILY FUND** (tenpercentowner) — https://whiteintel.dev/entity/fad7d838-21bf-571e-99ed-47e42a176abc
- **COUCHMAN FAMILY FUND** (tenpercentownerother) — https://whiteintel.dev/entity/fad7d838-21bf-571e-99ed-47e42a176abc
- **COUCHMAN JONATHAN** (tenpercentownerother) — https://whiteintel.dev/entity/600c53a4-9ae4-5a23-bd86-d2ffe763a18d
- **XSTELOS CORP.** (tenpercentownerother) — https://whiteintel.dev/entity/48bc0658-efd6-5c89-a794-36f47c6e4203
- **IRIDIAN ASSET MANAGEMENT LLC/CT** (tenpercentowner) — https://whiteintel.dev/entity/47685c2a-dee4-5b42-ae53-fe309200747d
- **HIGHBRIDGE CAPITAL MANAGEMENT LLC** (tenpercentowner) — https://whiteintel.dev/entity/bdac6d01-58dd-53a3-a60c-9b6c04485d72
- **DUBIN GLENN** (tenpercentowner) — https://whiteintel.dev/entity/d40d8a94-d928-59ea-bd34-de8badabf92c
- **HIGHBRIDGE CONVERTIBLE ARBITRAGE MASTER FUND, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/40e197ca-4b2a-5853-9a86-84976d61d8cb
- **SWIECA HENRY** (tenpercentowner) — https://whiteintel.dev/entity/e93227a8-7c76-571a-bdf1-41c899b6a126
- **1992 MSF INTERNATIONAL LTD.** (tenpercentowner) — https://whiteintel.dev/entity/6ae4acc7-4deb-513d-becc-c62f3dbe35af
- **1992 MULTI-STRATEGY FUND CORP** (tenpercentowner) — https://whiteintel.dev/entity/6f7065aa-f71d-58c7-ae8f-6125b9e1ca98

### UBO chain (walk to the ultimate owner)

A **202-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **ENZON PHARMACEUTICALS, INC.** — https://whiteintel.dev/entity/370d8022-d716-539a-ac74-a5c1fc3e85ba · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ENZON PHARMACEUTICALS, INC.**. Human view: https://whiteintel.dev/entity/370d8022-d716-539a-ac74-a5c1fc3e85ba · Structured JSON: https://whiteintel.dev/api/public/dossier/370d8022-d716-539a-ac74-a5c1fc3e85ba._

_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"._