---
title: "COOK JOSEPH C. III — Ownership Dossier"
canonical: https://whiteintel.dev/entity/18485bcd-b8ef-51a3-86fc-416da2cd2136
json: https://whiteintel.dev/api/public/dossier/18485bcd-b8ef-51a3-86fc-416da2cd2136
identifier: sec:0001783205
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# COOK JOSEPH C. III

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001783205`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/18485bcd-b8ef-51a3-86fc-416da2cd2136  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/18485bcd-b8ef-51a3-86fc-416da2cd2136  

## Ownership & control

### Holdings / subsidiaries

- **CASTLE BIOSCIENCES INC** (director) — https://whiteintel.dev/entity/b1e1509b-1087-5840-b5ea-73a6d28d9569
- **CASTLE BIOSCIENCES INC** (tenpercentowner) — https://whiteintel.dev/entity/b1e1509b-1087-5840-b5ea-73a6d28d9569

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **COOK JOSEPH C. III**. Human view: https://whiteintel.dev/entity/18485bcd-b8ef-51a3-86fc-416da2cd2136 · Structured JSON: https://whiteintel.dev/api/public/dossier/18485bcd-b8ef-51a3-86fc-416da2cd2136._

_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"._