---
title: "WEISS MICHAEL S — Ownership Dossier"
canonical: https://whiteintel.dev/entity/51c5c0a0-e718-51b2-952e-6fc69113871b
json: https://whiteintel.dev/api/public/dossier/51c5c0a0-e718-51b2-952e-6fc69113871b
identifier: sec:0001038977
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# WEISS MICHAEL S

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001038977`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/51c5c0a0-e718-51b2-952e-6fc69113871b  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/51c5c0a0-e718-51b2-952e-6fc69113871b  

## Ownership & control

### Holdings / subsidiaries

- **TG THERAPEUTICS, INC.** (officer) — https://whiteintel.dev/entity/9c13e806-71d9-5ea4-8db4-d751fc718108
- **Fortress Biotech, Inc.** (officer) — https://whiteintel.dev/entity/0f6be207-51ca-5528-9f98-259a119120d6
- **KERYX BIOPHAMAEUTICALS INC** (officer) — https://whiteintel.dev/entity/bd3a82f7-ca3e-527d-a069-ae188156d413
- **KERYX BIOPHAMAEUTICALS INC** (director) — https://whiteintel.dev/entity/bd3a82f7-ca3e-527d-a069-ae188156d413
- **Fortress Biotech, Inc.** (director) — https://whiteintel.dev/entity/0f6be207-51ca-5528-9f98-259a119120d6
- **TG THERAPEUTICS, INC.** (director) — https://whiteintel.dev/entity/9c13e806-71d9-5ea4-8db4-d751fc718108
- **Fortress Biotech, Inc.** (officer) — https://whiteintel.dev/entity/0f6be207-51ca-5528-9f98-259a119120d6
- **TG THERAPEUTICS, INC.** (officer) — https://whiteintel.dev/entity/9c13e806-71d9-5ea4-8db4-d751fc718108
- **Checkpoint Therapeutics, Inc.** (director) — https://whiteintel.dev/entity/35f3dc6d-8b4c-5267-a993-1465396a0556
- **Fortress Biotech, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/0f6be207-51ca-5528-9f98-259a119120d6
- **MUSTANG BIO, INC.** (director) — https://whiteintel.dev/entity/3fc122f9-6400-5305-b3a1-eb2ec007494a
- **AVENUE THERAPEUTICS, INC.** (director) — https://whiteintel.dev/entity/38869865-2929-5ffd-b1b7-9c8ba18dd3b8

…and **10** more subsidiaries/holdings. Resolve the full list with `get_dossier` on the WhiteIntel MCP (`npx -y @whiteintel/mcp-server`) 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 **WEISS MICHAEL S** — https://whiteintel.dev/entity/51c5c0a0-e718-51b2-952e-6fc69113871b · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **WEISS MICHAEL S**. Human view: https://whiteintel.dev/entity/51c5c0a0-e718-51b2-952e-6fc69113871b · Structured JSON: https://whiteintel.dev/api/public/dossier/51c5c0a0-e718-51b2-952e-6fc69113871b._

_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"._