---
title: "SHEFFERT MARK W — Ownership Dossier"
canonical: https://whiteintel.dev/entity/9eb4880f-8a2e-5ba8-ae03-da46df5a21e2
json: https://whiteintel.dev/api/public/dossier/9eb4880f-8a2e-5ba8-ae03-da46df5a21e2
identifier: sec:0001222236
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# SHEFFERT MARK W

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001222236`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/9eb4880f-8a2e-5ba8-ae03-da46df5a21e2  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/9eb4880f-8a2e-5ba8-ae03-da46df5a21e2  

## Ownership & control

### Holdings / subsidiaries

- **ANGEION CORP/MN** (director) — https://whiteintel.dev/entity/e0f457bc-0165-54ac-8b40-ac36360ce939
- **HEALTH FITNESS CORP /MN/** (director) — https://whiteintel.dev/entity/375c31d2-5058-5e24-881c-856e121470cc
- **ANALYSTS INTERNATIONAL CORP** (director) — https://whiteintel.dev/entity/13b5179c-40d6-57bf-bdf7-59e4940b17e4

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SHEFFERT MARK W**. Human view: https://whiteintel.dev/entity/9eb4880f-8a2e-5ba8-ae03-da46df5a21e2 · Structured JSON: https://whiteintel.dev/api/public/dossier/9eb4880f-8a2e-5ba8-ae03-da46df5a21e2._

_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"._