---
title: "MANKOFF STEVEN M — Ownership Dossier"
canonical: https://whiteintel.dev/entity/64de3519-83f0-5a20-9be0-b440c7fcba2f
json: https://whiteintel.dev/api/public/dossier/64de3519-83f0-5a20-9be0-b440c7fcba2f
identifier: sec:0001218481
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MANKOFF STEVEN M

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001218481`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/64de3519-83f0-5a20-9be0-b440c7fcba2f  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/64de3519-83f0-5a20-9be0-b440c7fcba2f  

## Ownership & control

### Holdings / subsidiaries

- **SIEBEL SYSTEMS INC** (officer) — https://whiteintel.dev/entity/81cfae19-f8a1-5a10-b349-35b6d6f54847

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MANKOFF STEVEN M**. Human view: https://whiteintel.dev/entity/64de3519-83f0-5a20-9be0-b440c7fcba2f · Structured JSON: https://whiteintel.dev/api/public/dossier/64de3519-83f0-5a20-9be0-b440c7fcba2f._

_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"._