---
title: "SCHACK DAVID J — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d679d1de-41ca-574e-bf4e-2b8f720889f7
json: https://whiteintel.dev/api/public/dossier/d679d1de-41ca-574e-bf4e-2b8f720889f7
identifier: sec:0001340829
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# SCHACK DAVID J

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001340829`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/d679d1de-41ca-574e-bf4e-2b8f720889f7  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d679d1de-41ca-574e-bf4e-2b8f720889f7  

## Ownership & control

### Holdings / subsidiaries

- **MEDICAL DEVICE TECHNOLOGIES INC** (tenpercentowner) — https://whiteintel.dev/entity/39659a3d-2c33-542e-a36c-51faf8429ff7
- **MEDICAL DEVICE TECHNOLOGIES INC** (director) — https://whiteintel.dev/entity/39659a3d-2c33-542e-a36c-51faf8429ff7

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SCHACK DAVID J**. Human view: https://whiteintel.dev/entity/d679d1de-41ca-574e-bf4e-2b8f720889f7 · Structured JSON: https://whiteintel.dev/api/public/dossier/d679d1de-41ca-574e-bf4e-2b8f720889f7._

_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"._