---
title: "HOERSTEN MARK A — Ownership Dossier"
canonical: https://whiteintel.dev/entity/4e299f15-4868-5ddf-bfda-cf0ab36f3dfa
json: https://whiteintel.dev/api/public/dossier/4e299f15-4868-5ddf-bfda-cf0ab36f3dfa
identifier: sec:0001232686
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# HOERSTEN MARK A

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001232686`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/4e299f15-4868-5ddf-bfda-cf0ab36f3dfa  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/4e299f15-4868-5ddf-bfda-cf0ab36f3dfa  

## Ownership & control

### Holdings / subsidiaries

- **KEITHLEY INSTRUMENTS INC** (officer) — https://whiteintel.dev/entity/9b0306fb-c181-5b89-8446-e7e3d99980ed

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **HOERSTEN MARK A**. Human view: https://whiteintel.dev/entity/4e299f15-4868-5ddf-bfda-cf0ab36f3dfa · Structured JSON: https://whiteintel.dev/api/public/dossier/4e299f15-4868-5ddf-bfda-cf0ab36f3dfa._

_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"._