---
title: "Sergei Ivanov — Ownership Dossier"
canonical: https://whiteintel.dev/entity/80a59f60-267c-5463-80e9-3d0d241cdcb1
json: https://whiteintel.dev/api/public/dossier/80a59f60-267c-5463-80e9-3d0d241cdcb1
jurisdiction: EE
source: WhiteIntel corporate-ownership graph
---

# Sergei Ivanov

**Type:** Person  
**Jurisdiction:** EE  
**Canonical dossier:** https://whiteintel.dev/entity/80a59f60-267c-5463-80e9-3d0d241cdcb1  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/80a59f60-267c-5463-80e9-3d0d241cdcb1  

## Ownership & control

### Holdings / subsidiaries

- **Mittetulundusühing Mantissa** (Juhatuse liige) — https://whiteintel.dev/entity/c69404c9-39b6-5995-a919-213965c92a93
- **OÜ Mantissa** (Juhatuse liige) — https://whiteintel.dev/entity/b79ca484-a972-51dc-93cc-28029e4f0cec
- **Tallinn, Liikuri tn 16 korteriühistu** (Juhatuse liige) — https://whiteintel.dev/entity/c8165d11-690e-51d2-a6b3-1ecf049dfa6a
- **Tallinn, Pallasti tn 34 korteriühistu** (Juhatuse liige) — https://whiteintel.dev/entity/8255f1e6-5625-5844-9c49-8dd223c3040f
- **Mittetulundusühing Mantissa** (beneficial owner) — https://whiteintel.dev/entity/c69404c9-39b6-5995-a919-213965c92a93
- **OÜ Mantissa** (beneficial owner) — https://whiteintel.dev/entity/b79ca484-a972-51dc-93cc-28029e4f0cec

## 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 **Sergei Ivanov** — https://whiteintel.dev/entity/80a59f60-267c-5463-80e9-3d0d241cdcb1 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Sergei Ivanov**. Human view: https://whiteintel.dev/entity/80a59f60-267c-5463-80e9-3d0d241cdcb1 · Structured JSON: https://whiteintel.dev/api/public/dossier/80a59f60-267c-5463-80e9-3d0d241cdcb1._

_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"._