---
title: "BLACKSTONE MORTGAGE TRUST, INC. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/194e999a-ec2a-5030-a4d2-414e6b1e2f50
json: https://whiteintel.dev/api/public/dossier/194e999a-ec2a-5030-a4d2-414e6b1e2f50
identifier: sec:0001061630
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# BLACKSTONE MORTGAGE TRUST, INC.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001061630`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/194e999a-ec2a-5030-a4d2-414e6b1e2f50  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/194e999a-ec2a-5030-a4d2-414e6b1e2f50  

## Ownership & control

### Owners / controllers

- **Blackstone Inc.** (tenpercentowner) — https://whiteintel.dev/entity/5ff5c874-40c8-5f5a-85f3-ba846f91fd02
- **BLACKSTONE HOLDINGS III L.P.** (tenpercentowner) — https://whiteintel.dev/entity/a0c2f5d9-a490-5446-8110-28311cf5d3f7
- **Blackstone Group Management L.L.C.** (tenpercentowner) — https://whiteintel.dev/entity/cbc276a8-e8cb-586d-93a2-a20897a0fd02
- **BLACKSTONE HOLDINGS III GP MANAGEMENT L.L.C.** (tenpercentowner) — https://whiteintel.dev/entity/e22c1f0b-966d-5a13-9530-f337cccdfd99
- **BLACKSTONE HOLDINGS III GP L.P.** (tenpercentowner) — https://whiteintel.dev/entity/216d4a2f-6849-5bb3-ba8f-6a834ee71812
- **SCHWARZMAN STEPHEN A** (tenpercentowner) — https://whiteintel.dev/entity/c4e8979e-462a-5a14-b156-c21c05e52084
- **WEISS GEORGE A** (tenpercentowner) — https://whiteintel.dev/entity/a094ca0c-7da3-580d-92cb-bb596e0af980
- **WEISS MULTI-STRATEGY ADVISERS LLC** (tenpercentowner) — https://whiteintel.dev/entity/28ca2e96-bcb1-5b55-b2ca-8e36e8ee9a4b
- **DOUCETTE FREDERICK E III** (tenpercentowner) — https://whiteintel.dev/entity/e6758fd7-5acb-516f-8e5b-1a6646a45111
- **BERKLEY W R CORP** (tenpercentowner) — https://whiteintel.dev/entity/848f6401-2e7a-554b-b8b3-9eed8a24abfa

### UBO chain (walk to the ultimate owner)

A **361-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **BLACKSTONE MORTGAGE TRUST, INC.** — https://whiteintel.dev/entity/194e999a-ec2a-5030-a4d2-414e6b1e2f50 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **BLACKSTONE MORTGAGE TRUST, INC.**. Human view: https://whiteintel.dev/entity/194e999a-ec2a-5030-a4d2-414e6b1e2f50 · Structured JSON: https://whiteintel.dev/api/public/dossier/194e999a-ec2a-5030-a4d2-414e6b1e2f50._

_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"._