---
title: "S5 Invest OÜ — Ownership Dossier"
canonical: https://whiteintel.dev/entity/dfca9c5c-69c6-5de5-825b-788c2a0ef38d
json: https://whiteintel.dev/api/public/dossier/dfca9c5c-69c6-5de5-825b-788c2a0ef38d
identifier: ee-regcode:16422358
jurisdiction: EE
source: WhiteIntel corporate-ownership graph
---

# S5 Invest OÜ

**Type:** Company  
**Jurisdiction:** EE  
**Identifier:** `ee-regcode:16422358`  
**Canonical dossier:** https://whiteintel.dev/entity/dfca9c5c-69c6-5de5-825b-788c2a0ef38d  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/dfca9c5c-69c6-5de5-825b-788c2a0ef38d  

## Registry profile

- **Status:** Registrisse kantud  
- **Legal form:** `Osaühing`  
- **Source:** Estonian e-Business Register (RIK)  

## Ownership & control

### Owners / controllers

- **Andres Siinmaa** (beneficial owner) — https://whiteintel.dev/entity/0958c77f-6bbf-5249-99e2-e202823fcf8f
- **Kai Siinmaa** (beneficial owner) — https://whiteintel.dev/entity/3149a4e5-7d60-5156-8f32-b4aa504247b9
- **Mihkel Siinmaa** (beneficial owner) — https://whiteintel.dev/entity/1319813c-2dfb-5b7e-8a19-4b98fb336e7a
- **Paula Siinmaa** (beneficial owner) — https://whiteintel.dev/entity/38956a32-f957-5f78-bf03-0f9d9c6892ff

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

A **6-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.

## Provenance

- estonia_ariregister — https://ariregister.rik.ee/est/company/16422358

## 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 **S5 Invest OÜ** — https://whiteintel.dev/entity/dfca9c5c-69c6-5de5-825b-788c2a0ef38d · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **S5 Invest OÜ**. Human view: https://whiteintel.dev/entity/dfca9c5c-69c6-5de5-825b-788c2a0ef38d · Structured JSON: https://whiteintel.dev/api/public/dossier/dfca9c5c-69c6-5de5-825b-788c2a0ef38d._

_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"._