---
title: "MANSFIELD WILLIAM P — Ownership Dossier"
canonical: https://whiteintel.dev/entity/457e6dff-ec91-5879-8daf-bbdc783f7529
json: https://whiteintel.dev/api/public/dossier/457e6dff-ec91-5879-8daf-bbdc783f7529
identifier: sec:0001603945
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MANSFIELD WILLIAM P

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001603945`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/457e6dff-ec91-5879-8daf-bbdc783f7529  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/457e6dff-ec91-5879-8daf-bbdc783f7529  

## Ownership & control

### Holdings / subsidiaries

- **GRAYBAR ELECTRIC CO INC** (officer) — https://whiteintel.dev/entity/a7bc5cd5-81f3-5bf3-adbd-d5e4f4777dda
- **GRAYBAR ELECTRIC CO INC** (director) — https://whiteintel.dev/entity/a7bc5cd5-81f3-5bf3-adbd-d5e4f4777dda
- **GRAYBAR ELECTRIC CO INC** (officer) — https://whiteintel.dev/entity/a7bc5cd5-81f3-5bf3-adbd-d5e4f4777dda

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MANSFIELD WILLIAM P**. Human view: https://whiteintel.dev/entity/457e6dff-ec91-5879-8daf-bbdc783f7529 · Structured JSON: https://whiteintel.dev/api/public/dossier/457e6dff-ec91-5879-8daf-bbdc783f7529._

_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"._