---
title: "MERCER WILLIAM S — Ownership Dossier"
canonical: https://whiteintel.dev/entity/4e807ee2-fe7f-5d68-9420-24c4ad02f281
json: https://whiteintel.dev/api/public/dossier/4e807ee2-fe7f-5d68-9420-24c4ad02f281
identifier: sec:0002058460
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MERCER WILLIAM S

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0002058460`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/4e807ee2-fe7f-5d68-9420-24c4ad02f281  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/4e807ee2-fe7f-5d68-9420-24c4ad02f281  

## Ownership & control

### Holdings / subsidiaries

- **ATEGRITY SPECIALTY HOLDINGS LLC** (director) — https://whiteintel.dev/entity/a9c225c6-86e7-5b8c-a969-d5f1e835be52

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MERCER WILLIAM S**. Human view: https://whiteintel.dev/entity/4e807ee2-fe7f-5d68-9420-24c4ad02f281 · Structured JSON: https://whiteintel.dev/api/public/dossier/4e807ee2-fe7f-5d68-9420-24c4ad02f281._

_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"._