---
title: "COSTELLO THOMAS MICHAEL JR — Ownership Dossier"
canonical: https://whiteintel.dev/entity/5d34fbc1-6465-5849-b465-0f19ed331a67
json: https://whiteintel.dev/api/public/dossier/5d34fbc1-6465-5849-b465-0f19ed331a67
identifier: sec:0001231871
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# COSTELLO THOMAS MICHAEL JR

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001231871`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/5d34fbc1-6465-5849-b465-0f19ed331a67  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/5d34fbc1-6465-5849-b465-0f19ed331a67  

## Ownership & control

### Holdings / subsidiaries

- **COMPUWARE CORP** (officer) — https://whiteintel.dev/entity/4b5b7cd6-26a8-5be7-bdb1-bbccb1784b44

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **COSTELLO THOMAS MICHAEL JR**. Human view: https://whiteintel.dev/entity/5d34fbc1-6465-5849-b465-0f19ed331a67 · Structured JSON: https://whiteintel.dev/api/public/dossier/5d34fbc1-6465-5849-b465-0f19ed331a67._

_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"._