---
title: "Karl Johan Vallner — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d99e7beb-dc28-5f38-9c02-3d106fc0dced
json: https://whiteintel.dev/api/public/dossier/d99e7beb-dc28-5f38-9c02-3d106fc0dced
jurisdiction: EE
source: WhiteIntel corporate-ownership graph
---

# Karl Johan Vallner

**Type:** Person  
**Jurisdiction:** EE  
**Canonical dossier:** https://whiteintel.dev/entity/d99e7beb-dc28-5f38-9c02-3d106fc0dced  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d99e7beb-dc28-5f38-9c02-3d106fc0dced  

## Ownership & control

### Holdings / subsidiaries

- **Cognio OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/8a9933e4-3304-52c9-9aa3-d239d96e8ffa
- **JV Holding OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/0a8cd7bb-55ef-5663-a172-d52b3876e903
- **Spellsteel OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/30ffc895-3a58-5750-90dc-21c10a04527b
- **Tallinn, Merekalju tn 1 // 2 // 3 // 4, Merekalju tn 5 // 6 // 7 // 8 korteriühistu** (Juhatuse liige) — https://whiteintel.dev/entity/365a1150-f6f9-546b-b121-cda8a504de49
- **When App OÜ** (Juhatuse liige) — https://whiteintel.dev/entity/bd5f137e-65ce-5fa3-8f8f-0b56bc1bd495
- **Cognio OÜ** (beneficial owner) — https://whiteintel.dev/entity/8a9933e4-3304-52c9-9aa3-d239d96e8ffa
- **JV Holding OÜ** (beneficial owner) — https://whiteintel.dev/entity/0a8cd7bb-55ef-5663-a172-d52b3876e903
- **Spellsteel OÜ** (beneficial owner) — https://whiteintel.dev/entity/30ffc895-3a58-5750-90dc-21c10a04527b
- **When App OÜ** (beneficial owner) — https://whiteintel.dev/entity/bd5f137e-65ce-5fa3-8f8f-0b56bc1bd495

## 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 **Karl Johan Vallner** — https://whiteintel.dev/entity/d99e7beb-dc28-5f38-9c02-3d106fc0dced · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Karl Johan Vallner**. Human view: https://whiteintel.dev/entity/d99e7beb-dc28-5f38-9c02-3d106fc0dced · Structured JSON: https://whiteintel.dev/api/public/dossier/d99e7beb-dc28-5f38-9c02-3d106fc0dced._

_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"._