---
title: "KORALESKI JOHN J — Ownership Dossier"
canonical: https://whiteintel.dev/entity/5d38cfba-2fba-5dd9-82d9-38e7eee7fa58
json: https://whiteintel.dev/api/public/dossier/5d38cfba-2fba-5dd9-82d9-38e7eee7fa58
identifier: sec:0001200010
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# KORALESKI JOHN J

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001200010`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/5d38cfba-2fba-5dd9-82d9-38e7eee7fa58  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/5d38cfba-2fba-5dd9-82d9-38e7eee7fa58  

## Ownership & control

### Holdings / subsidiaries

- **MARTIN MARIETTA MATERIALS INC** (director) — https://whiteintel.dev/entity/85a522af-98e3-58dd-9477-088f3dd7f30e
- **UNION PACIFIC CORP** (officer) — https://whiteintel.dev/entity/ffc025de-f899-51bf-b7eb-4391d0291a94
- **MARTIN MARIETTA MATERIALS INC** (director) — https://whiteintel.dev/entity/85a522af-98e3-58dd-9477-088f3dd7f30e
- **UNION PACIFIC CORP** (director) — https://whiteintel.dev/entity/ffc025de-f899-51bf-b7eb-4391d0291a94

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **KORALESKI JOHN J**. Human view: https://whiteintel.dev/entity/5d38cfba-2fba-5dd9-82d9-38e7eee7fa58 · Structured JSON: https://whiteintel.dev/api/public/dossier/5d38cfba-2fba-5dd9-82d9-38e7eee7fa58._

_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"._