---
title: "ARMSTRONG C MICHAEL — Ownership Dossier"
canonical: https://whiteintel.dev/entity/e21214ae-3cfc-59ff-bace-fac90ccd45d8
json: https://whiteintel.dev/api/public/dossier/e21214ae-3cfc-59ff-bace-fac90ccd45d8
identifier: sec:0001168011
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ARMSTRONG C MICHAEL

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001168011`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/e21214ae-3cfc-59ff-bace-fac90ccd45d8  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/e21214ae-3cfc-59ff-bace-fac90ccd45d8  

## Ownership & control

### Holdings / subsidiaries

- **CITIGROUP INC** (director) — https://whiteintel.dev/entity/1a7ff48c-8686-5d58-8f13-020a4c1a6dba
- **IHS INC.** (director) — https://whiteintel.dev/entity/59c51051-a83f-5e5f-ba9a-14c957f453f7
- **HCA Healthcare, Inc.** (director) — https://whiteintel.dev/entity/ee32de49-bf58-57e9-ae1e-21d7cbfe5988

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ARMSTRONG C MICHAEL**. Human view: https://whiteintel.dev/entity/e21214ae-3cfc-59ff-bace-fac90ccd45d8 · Structured JSON: https://whiteintel.dev/api/public/dossier/e21214ae-3cfc-59ff-bace-fac90ccd45d8._

_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"._