---
title: "SIEGEL MATTHEW — Ownership Dossier"
canonical: https://whiteintel.dev/entity/de676ad8-e1da-539d-a6f7-66879c15229e
json: https://whiteintel.dev/api/public/dossier/de676ad8-e1da-539d-a6f7-66879c15229e
identifier: sec:0001644133
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# SIEGEL MATTHEW

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001644133`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/de676ad8-e1da-539d-a6f7-66879c15229e  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/de676ad8-e1da-539d-a6f7-66879c15229e  

## Ownership & control

### Holdings / subsidiaries

- **OUTFRONT Media Inc.** (officer) — https://whiteintel.dev/entity/e7df56bc-b624-51d0-ac84-91255f31be20
- **OUTFRONT Media Inc.** (officer) — https://whiteintel.dev/entity/e7df56bc-b624-51d0-ac84-91255f31be20
- **SPECTRUM MANAGEMENT HOLDING COMPANY, LLC** (officer) — https://whiteintel.dev/entity/e89ff432-653e-5e5d-aef8-068c26b5b2a7

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SIEGEL MATTHEW**. Human view: https://whiteintel.dev/entity/de676ad8-e1da-539d-a6f7-66879c15229e · Structured JSON: https://whiteintel.dev/api/public/dossier/de676ad8-e1da-539d-a6f7-66879c15229e._

_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"._