---
title: "HENDERSON JOHN T — Ownership Dossier"
canonical: https://whiteintel.dev/entity/9232dc86-958d-5dd6-bbac-016fc7b9b859
json: https://whiteintel.dev/api/public/dossier/9232dc86-958d-5dd6-bbac-016fc7b9b859
identifier: sec:0001226488
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# HENDERSON JOHN T

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001226488`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/9232dc86-958d-5dd6-bbac-016fc7b9b859  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/9232dc86-958d-5dd6-bbac-016fc7b9b859  

## Ownership & control

### Holdings / subsidiaries

- **CYTOKINETICS INC** (director) — https://whiteintel.dev/entity/0eb385f6-49c6-5406-ba0c-13179011e29b
- **MYRIAD GENETICS INC** (director) — https://whiteintel.dev/entity/7a32b75c-a965-5188-aa17-f64a661f8b02
- **CYTOKINETICS INC** (director) — https://whiteintel.dev/entity/0eb385f6-49c6-5406-ba0c-13179011e29b
- **MYREXIS, INC.** (director) — https://whiteintel.dev/entity/53f41b7f-e9a7-5cc8-bf78-0c1bbbca939f

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **HENDERSON JOHN T**. Human view: https://whiteintel.dev/entity/9232dc86-958d-5dd6-bbac-016fc7b9b859 · Structured JSON: https://whiteintel.dev/api/public/dossier/9232dc86-958d-5dd6-bbac-016fc7b9b859._

_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"._