---
title: "Mr John Carl Sebastian Tham — Ownership Dossier"
canonical: https://whiteintel.dev/entity/241f22b1-0751-54bb-80a4-8774ef42eeed
json: https://whiteintel.dev/api/public/dossier/241f22b1-0751-54bb-80a4-8774ef42eeed
identifier: oo-person:GB-COH-PER-02930127-OY4_4Ru6vP8b7BkINIokNEnYp3E
jurisdiction: SE
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr John Carl Sebastian Tham

**Type:** Person  
**Jurisdiction:** SE  
**Identifier:** `oo-person:GB-COH-PER-02930127-OY4_4Ru6vP8b7BkINIokNEnYp3E`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/241f22b1-0751-54bb-80a4-8774ef42eeed  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/241f22b1-0751-54bb-80a4-8774ef42eeed  

## Ownership & control

### Holdings / subsidiaries

- **SELF-SEALING SYSTEMS LTD.** (beneficial owner) — https://whiteintel.dev/entity/2b9bfabe-be95-5674-86f5-5fc07622983b

## 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 John Carl Sebastian Tham** — https://whiteintel.dev/entity/241f22b1-0751-54bb-80a4-8774ef42eeed · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr John Carl Sebastian Tham**. Human view: https://whiteintel.dev/entity/241f22b1-0751-54bb-80a4-8774ef42eeed · Structured JSON: https://whiteintel.dev/api/public/dossier/241f22b1-0751-54bb-80a4-8774ef42eeed._

_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"._