---
title: "Martti Mäger — Ownership Dossier"
canonical: https://whiteintel.dev/entity/aab0ee82-11dd-556d-8141-c2383ec9e801
json: https://whiteintel.dev/api/public/dossier/aab0ee82-11dd-556d-8141-c2383ec9e801
jurisdiction: EE
source: WhiteIntel corporate-ownership graph
---

# Martti Mäger

**Type:** Person  
**Jurisdiction:** EE  
**Canonical dossier:** https://whiteintel.dev/entity/aab0ee82-11dd-556d-8141-c2383ec9e801  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/aab0ee82-11dd-556d-8141-c2383ec9e801  

## Ownership & control

### Holdings / subsidiaries

- **MGR Enterprises OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/dd8b0490-cde0-5566-9eea-142525d3e385
- **MGR Tech Solutions OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/2dcd8a4e-e03b-54d3-87e4-5384aabf4e81
- **Ruumi Grupp OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/74be1b69-85db-5fc2-8a4a-57a88c86a97b
- **Z500 FinEst OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/de9de1ec-481e-543a-8fd9-3300316d3391
- **Thermomaja OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/b581f808-a4ef-55f8-8d77-654891068c74
- **MGR Enterprises OÜ** (beneficial owner) — https://whiteintel.dev/entity/dd8b0490-cde0-5566-9eea-142525d3e385
- **MGR Tech Solutions OÜ** (beneficial owner) — https://whiteintel.dev/entity/2dcd8a4e-e03b-54d3-87e4-5384aabf4e81
- **Z500 FinEst OÜ** (beneficial owner) — https://whiteintel.dev/entity/de9de1ec-481e-543a-8fd9-3300316d3391

## 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 **Martti Mäger** — https://whiteintel.dev/entity/aab0ee82-11dd-556d-8141-c2383ec9e801 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Martti Mäger**. Human view: https://whiteintel.dev/entity/aab0ee82-11dd-556d-8141-c2383ec9e801 · Structured JSON: https://whiteintel.dev/api/public/dossier/aab0ee82-11dd-556d-8141-c2383ec9e801._

_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"._