---
title: "Brennan - David John — Ownership Dossier"
canonical: https://whiteintel.dev/entity/a8d4b874-e01b-5e17-86b0-3b823ce63a1e
json: https://whiteintel.dev/api/public/dossier/a8d4b874-e01b-5e17-86b0-3b823ce63a1e
identifier: icij:icijol-80041256
jurisdiction: GB
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# Brennan - David John

**Type:** Organization  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `icij:icijol-80041256`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/a8d4b874-e01b-5e17-86b0-3b823ce63a1e  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/a8d4b874-e01b-5e17-86b0-3b823ce63a1e  

## Ownership & control

### Holdings / subsidiaries

- **MassMutual Holdings (Bermuda) Ltd.** (chairman of) — https://whiteintel.dev/entity/12916ec2-f275-5120-8927-6439981fc46a
- **MassMutual Holdings (Bermuda) Ltd.** (chief executive officer of) — https://whiteintel.dev/entity/12916ec2-f275-5120-8927-6439981fc46a
- **MassMutual Holdings (Bermuda) Ltd.** (director of) — https://whiteintel.dev/entity/12916ec2-f275-5120-8927-6439981fc46a

## Provenance

- ICIJ Offshore Leaks — https://offshoreleaks.icij.org/nodes/80041256

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Brennan - David John**. Human view: https://whiteintel.dev/entity/a8d4b874-e01b-5e17-86b0-3b823ce63a1e · Structured JSON: https://whiteintel.dev/api/public/dossier/a8d4b874-e01b-5e17-86b0-3b823ce63a1e._

_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"._