---
title: "Otto Tammsaar — Ownership Dossier"
canonical: https://whiteintel.dev/entity/4e2f0533-9be4-5a6e-8c03-b07bc51fcd60
json: https://whiteintel.dev/api/public/dossier/4e2f0533-9be4-5a6e-8c03-b07bc51fcd60
jurisdiction: EE
source: WhiteIntel corporate-ownership graph
---

# Otto Tammsaar

**Type:** Person  
**Jurisdiction:** EE  
**Canonical dossier:** https://whiteintel.dev/entity/4e2f0533-9be4-5a6e-8c03-b07bc51fcd60  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/4e2f0533-9be4-5a6e-8c03-b07bc51fcd60  

## Ownership & control

### Holdings / subsidiaries

- **steel cube OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/2c66cc9f-8c93-5320-b7e4-48b3292310c3
- **Töka OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/d02b9fe5-04d6-55e4-a557-9c9b89f7840e
- **steel cube OÜ** (beneficial owner) — https://whiteintel.dev/entity/2c66cc9f-8c93-5320-b7e4-48b3292310c3
- **Töka OÜ** (beneficial owner) — https://whiteintel.dev/entity/d02b9fe5-04d6-55e4-a557-9c9b89f7840e

## Provenance

- estonia_ariregister — https://avaandmed.ariregister.rik.ee/

## 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 **Otto Tammsaar** — https://whiteintel.dev/entity/4e2f0533-9be4-5a6e-8c03-b07bc51fcd60 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Otto Tammsaar**. Human view: https://whiteintel.dev/entity/4e2f0533-9be4-5a6e-8c03-b07bc51fcd60 · Structured JSON: https://whiteintel.dev/api/public/dossier/4e2f0533-9be4-5a6e-8c03-b07bc51fcd60._

_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"._