---
title: "GELTOSKY JOHN — Ownership Dossier"
canonical: https://whiteintel.dev/entity/12f485d2-7835-5f86-84f7-e114f49eb9d3
json: https://whiteintel.dev/api/public/dossier/12f485d2-7835-5f86-84f7-e114f49eb9d3
identifier: sec:0001436209
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# GELTOSKY JOHN

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001436209`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/12f485d2-7835-5f86-84f7-e114f49eb9d3  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/12f485d2-7835-5f86-84f7-e114f49eb9d3  

## Ownership & control

### Holdings / subsidiaries

- **SOPHIRIS BIO INC.** (director) — https://whiteintel.dev/entity/cfbf28e3-e0dd-50f3-a40d-22118177958d
- **ENZON PHARMACEUTICALS, INC.** (director) — https://whiteintel.dev/entity/370d8022-d716-539a-ac74-a5c1fc3e85ba

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **GELTOSKY JOHN**. Human view: https://whiteintel.dev/entity/12f485d2-7835-5f86-84f7-e114f49eb9d3 · Structured JSON: https://whiteintel.dev/api/public/dossier/12f485d2-7835-5f86-84f7-e114f49eb9d3._

_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"._