---
title: "Mr Mark Stephen Sipsma — Ownership Dossier"
canonical: https://whiteintel.dev/entity/2618b9f7-072e-547a-b51e-7910988d07cd
json: https://whiteintel.dev/api/public/dossier/2618b9f7-072e-547a-b51e-7910988d07cd
identifier: oo-person:GB-COH-PER-13751471-93Tr97gXFoL8TpaIujzV5jZZmpY
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Mark Stephen Sipsma

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo-person:GB-COH-PER-13751471-93Tr97gXFoL8TpaIujzV5jZZmpY`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/2618b9f7-072e-547a-b51e-7910988d07cd  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/2618b9f7-072e-547a-b51e-7910988d07cd  

## Ownership & control

### Holdings / subsidiaries

- **SIPSMA 365 LTD** (beneficial owner) — 75% — https://whiteintel.dev/entity/cc953fe1-a34e-5629-a784-cb373864c217

## Provenance

- OpenOwnership — https://www.openownership.org

## 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 **Mr Mark Stephen Sipsma** — https://whiteintel.dev/entity/2618b9f7-072e-547a-b51e-7910988d07cd · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Mark Stephen Sipsma**. Human view: https://whiteintel.dev/entity/2618b9f7-072e-547a-b51e-7910988d07cd · Structured JSON: https://whiteintel.dev/api/public/dossier/2618b9f7-072e-547a-b51e-7910988d07cd._

_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"._