---
title: "Apostolou Stephanie L — Ownership Dossier"
canonical: https://whiteintel.dev/entity/43421037-0f9b-50eb-9620-e9e628c656ed
json: https://whiteintel.dev/api/public/dossier/43421037-0f9b-50eb-9620-e9e628c656ed
identifier: sec:0001806249
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Apostolou Stephanie L

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001806249`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/43421037-0f9b-50eb-9620-e9e628c656ed  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/43421037-0f9b-50eb-9620-e9e628c656ed  

## Ownership & control

### Holdings / subsidiaries

- **Koppers Holdings Inc.** (officer) — https://whiteintel.dev/entity/53a24497-89e5-572e-baac-9f84b1948100
- **Koppers Holdings Inc.** (officer) — https://whiteintel.dev/entity/53a24497-89e5-572e-baac-9f84b1948100

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Apostolou Stephanie L**. Human view: https://whiteintel.dev/entity/43421037-0f9b-50eb-9620-e9e628c656ed · Structured JSON: https://whiteintel.dev/api/public/dossier/43421037-0f9b-50eb-9620-e9e628c656ed._

_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"._