---
title: "Maddrey Nicole Marie — Ownership Dossier"
canonical: https://whiteintel.dev/entity/4a5c63e2-4598-539b-811d-e89af64e4c5b
json: https://whiteintel.dev/api/public/dossier/4a5c63e2-4598-539b-811d-e89af64e4c5b
identifier: sec:0001638300
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Maddrey Nicole Marie

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001638300`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/4a5c63e2-4598-539b-811d-e89af64e4c5b  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/4a5c63e2-4598-539b-811d-e89af64e4c5b  

## Ownership & control

### Holdings / subsidiaries

- **Graham Holdings Co** (officer) — https://whiteintel.dev/entity/2e37da9a-4241-527c-8437-6f2a6f09c4b3
- **Graham Holdings Co** (officer) — https://whiteintel.dev/entity/2e37da9a-4241-527c-8437-6f2a6f09c4b3

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Maddrey Nicole Marie**. Human view: https://whiteintel.dev/entity/4a5c63e2-4598-539b-811d-e89af64e4c5b · Structured JSON: https://whiteintel.dev/api/public/dossier/4a5c63e2-4598-539b-811d-e89af64e4c5b._

_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"._