---
title: "SERGIO RONALDO MARTINS — Ownership Dossier"
canonical: https://whiteintel.dev/entity/36b917ba-6781-58a1-bead-e27e8e772ba8
json: https://whiteintel.dev/api/public/dossier/36b917ba-6781-58a1-bead-e27e8e772ba8
jurisdiction: BR
source: WhiteIntel corporate-ownership graph
---

# SERGIO RONALDO MARTINS

**Type:** Person  
**Jurisdiction:** [BR](https://whiteintel.dev/jurisdictions/br)  
**Canonical dossier:** https://whiteintel.dev/entity/36b917ba-6781-58a1-bead-e27e8e772ba8  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/36b917ba-6781-58a1-bead-e27e8e772ba8  

## Ownership & control

### Holdings / subsidiaries

- **DIVIFIBRA TELECOMUNICACOES LTDA** (owner) — https://whiteintel.dev/entity/f92ee68c-4689-5b1b-8d9a-13cb01903ec9
- **SERMAR SERVICOS ADMINISTRATIVOS LTDA** (owner) — https://whiteintel.dev/entity/a5b35613-cceb-5c9c-801f-b0fc8b4190c6
- **VIACEU INTERNET LTDA** (owner) — https://whiteintel.dev/entity/39e4ebf6-a0ac-53d3-88c8-9d59cfd658f6
- **DDJL PROVEDOR DE INTERNET E TELECOMUNICACOES LTDA** (owner) — https://whiteintel.dev/entity/52b96086-3a09-573d-80f3-c0d6bbcc0121

## Provenance

- rfb_cnpj — https://casadosdados.com.br/solucao/cnpj/24320164

## 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 **SERGIO RONALDO MARTINS** — https://whiteintel.dev/entity/36b917ba-6781-58a1-bead-e27e8e772ba8 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SERGIO RONALDO MARTINS**. Human view: https://whiteintel.dev/entity/36b917ba-6781-58a1-bead-e27e8e772ba8 · Structured JSON: https://whiteintel.dev/api/public/dossier/36b917ba-6781-58a1-bead-e27e8e772ba8._

_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"._