---
title: "PORTER W ARTHUR — Ownership Dossier"
canonical: https://whiteintel.dev/entity/afbd198d-b734-52bd-9d5a-6ddbfad4cb5f
json: https://whiteintel.dev/api/public/dossier/afbd198d-b734-52bd-9d5a-6ddbfad4cb5f
identifier: sec:0001194376
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# PORTER W ARTHUR

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001194376`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/afbd198d-b734-52bd-9d5a-6ddbfad4cb5f  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/afbd198d-b734-52bd-9d5a-6ddbfad4cb5f  

## Ownership & control

### Holdings / subsidiaries

- **STEWART INFORMATION SERVICES CORP** (director) — https://whiteintel.dev/entity/2c52077d-9dad-57f6-88a9-0c22a812f101
- **ELECTRO SCIENTIFIC INDUSTRIES INC** (director) — https://whiteintel.dev/entity/e350b4bf-bc74-54a0-9874-0ab0a674edd4
- **BOOKHAM TECHNOLOGY PLC** (director) — https://whiteintel.dev/entity/8b759ab6-0bbb-596f-a76b-318bb26f76e8

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **PORTER W ARTHUR**. Human view: https://whiteintel.dev/entity/afbd198d-b734-52bd-9d5a-6ddbfad4cb5f · Structured JSON: https://whiteintel.dev/api/public/dossier/afbd198d-b734-52bd-9d5a-6ddbfad4cb5f._

_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"._