---
title: "EISENSTEIN STEVEN MARK — Ownership Dossier"
canonical: https://whiteintel.dev/entity/c4578479-e339-5cc7-9278-8a7add8559b4
json: https://whiteintel.dev/api/public/dossier/c4578479-e339-5cc7-9278-8a7add8559b4
identifier: sec:0001436307
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# EISENSTEIN STEVEN MARK

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001436307`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/c4578479-e339-5cc7-9278-8a7add8559b4  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/c4578479-e339-5cc7-9278-8a7add8559b4  

## Ownership & control

### Holdings / subsidiaries

- **ERESEARCHTECHNOLOGY INC /DE/** (officer) — https://whiteintel.dev/entity/acbaabc0-bc0f-54d7-8f3b-ebc706a232fe

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **EISENSTEIN STEVEN MARK**. Human view: https://whiteintel.dev/entity/c4578479-e339-5cc7-9278-8a7add8559b4 · Structured JSON: https://whiteintel.dev/api/public/dossier/c4578479-e339-5cc7-9278-8a7add8559b4._

_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"._