---
title: "Martin Sempelson — Ownership Dossier"
canonical: https://whiteintel.dev/entity/0e8cc3df-bba7-56bd-8ded-6d3368006173
json: https://whiteintel.dev/api/public/dossier/0e8cc3df-bba7-56bd-8ded-6d3368006173
jurisdiction: EE
source: WhiteIntel corporate-ownership graph
---

# Martin Sempelson

**Type:** Person  
**Jurisdiction:** EE  
**Canonical dossier:** https://whiteintel.dev/entity/0e8cc3df-bba7-56bd-8ded-6d3368006173  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/0e8cc3df-bba7-56bd-8ded-6d3368006173  

## Ownership & control

### Holdings / subsidiaries

- **Mittetulundusühing Vändra Noored** (Juhatuse liige) — https://whiteintel.dev/entity/6bd9b765-7741-5b05-9658-97ae89cef230
- **Multi Events OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/e160e9e1-a81c-5a3b-824c-2c7b9b7c5641
- **Põhja-Pärnumaa vald, Vändra alev, Spordi tn 8 korteriühistu** (Juhatuse liige) — https://whiteintel.dev/entity/6d35f138-1a82-50d5-8246-57c644d55d38
- **Stageflex OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/4fa7f848-c725-51ac-a506-236e7561283c
- **Vändra Kultuurimaja** (Asutuse esindusõiguslik isik) — https://whiteintel.dev/entity/40b2d2f1-4c70-5f3a-8600-6baf8d08fad2
- **Mittetulundusühing Vändra Noored** (beneficial owner) — https://whiteintel.dev/entity/6bd9b765-7741-5b05-9658-97ae89cef230
- **Multi Events OÜ** (beneficial owner) — https://whiteintel.dev/entity/e160e9e1-a81c-5a3b-824c-2c7b9b7c5641
- **Stageflex OÜ** (beneficial owner) — https://whiteintel.dev/entity/4fa7f848-c725-51ac-a506-236e7561283c

## 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 **Martin Sempelson** — https://whiteintel.dev/entity/0e8cc3df-bba7-56bd-8ded-6d3368006173 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Martin Sempelson**. Human view: https://whiteintel.dev/entity/0e8cc3df-bba7-56bd-8ded-6d3368006173 · Structured JSON: https://whiteintel.dev/api/public/dossier/0e8cc3df-bba7-56bd-8ded-6d3368006173._

_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"._