---
title: "LIXTE BIOTECHNOLOGY HOLDINGS, INC. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/3beb0f5c-0794-545e-81ca-88ff703a378b
json: https://whiteintel.dev/api/public/dossier/3beb0f5c-0794-545e-81ca-88ff703a378b
identifier: sec:0001335105
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# LIXTE BIOTECHNOLOGY HOLDINGS, INC.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001335105`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/3beb0f5c-0794-545e-81ca-88ff703a378b  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/3beb0f5c-0794-545e-81ca-88ff703a378b  

## Ownership & control

### Owners / controllers

- **SCHWARTZBERG DEBBIE** (tenpercentowner) — https://whiteintel.dev/entity/87a44916-46d6-54f8-ba30-213eac851cf4
- **KRINSKY GLENN** (tenpercentowner) — https://whiteintel.dev/entity/45546917-a572-5c42-8186-e2976e78cbba
- **SCHWARTZBERG GIL** (tenpercentowner) — https://whiteintel.dev/entity/abc75e24-a267-5b75-92bf-a948a28c7874
- **FORMAN ERIC** (tenpercentowner) — https://whiteintel.dev/entity/72d83a9f-84a8-558f-9b10-d37258e07e4c
- **GREENBERG ROBERT** (tenpercentowner) — https://whiteintel.dev/entity/f911a426-f1b8-5fca-91c5-c2e4a632074c
- **GREENBERG FAMILY TRUST** (tenpercentowner) — https://whiteintel.dev/entity/2bea5281-988c-5b3f-9c03-e1f97c8ffcc4
- **HO HUNG TAK** (tenpercentowner) — https://whiteintel.dev/entity/0a71471e-7878-5bd6-a412-f2e09fff651b
- **GREENBERG M SUSAN** (tenpercentowner) — https://whiteintel.dev/entity/5a63ad34-d34f-51f2-98c9-14d209976e84
- **KOVACH JOHN S** (tenpercentowner) — https://whiteintel.dev/entity/4c679104-c096-54af-bc33-88d574346b2d
- **RIGGS ARTHUR** (tenpercentowner) — https://whiteintel.dev/entity/f64345a8-837b-5f4c-a20a-f2d39e0daa47
- **RIGGS JANE MERRILL** (tenpercentowner) — https://whiteintel.dev/entity/5f35b06b-063e-553a-aada-52b2fdfe85e9
- **JOHN & BARBARA KOVACH 2015 TRUST** (tenpercentowner) — https://whiteintel.dev/entity/10da5356-f673-52e3-965d-2cdc118975ec

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

A **42-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 **LIXTE BIOTECHNOLOGY HOLDINGS, INC.** — https://whiteintel.dev/entity/3beb0f5c-0794-545e-81ca-88ff703a378b · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **LIXTE BIOTECHNOLOGY HOLDINGS, INC.**. Human view: https://whiteintel.dev/entity/3beb0f5c-0794-545e-81ca-88ff703a378b · Structured JSON: https://whiteintel.dev/api/public/dossier/3beb0f5c-0794-545e-81ca-88ff703a378b._

_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"._