---
title: "SAPNAR MICHAEL CHARLES — Ownership Dossier"
canonical: https://whiteintel.dev/entity/4a90c19b-6935-57fa-8802-58316d3bcab9
json: https://whiteintel.dev/api/public/dossier/4a90c19b-6935-57fa-8802-58316d3bcab9
identifier: sec:0001318902
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# SAPNAR MICHAEL CHARLES

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001318902`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/4a90c19b-6935-57fa-8802-58316d3bcab9  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/4a90c19b-6935-57fa-8802-58316d3bcab9  

## Ownership & control

### Holdings / subsidiaries

- **TRANSATLANTIC HOLDINGS INC** (officer) — https://whiteintel.dev/entity/f4e3ff68-8e6f-50de-b325-9059f55e3845
- **TRANSATLANTIC HOLDINGS INC** (director) — https://whiteintel.dev/entity/f4e3ff68-8e6f-50de-b325-9059f55e3845

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SAPNAR MICHAEL CHARLES**. Human view: https://whiteintel.dev/entity/4a90c19b-6935-57fa-8802-58316d3bcab9 · Structured JSON: https://whiteintel.dev/api/public/dossier/4a90c19b-6935-57fa-8802-58316d3bcab9._

_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"._