---
title: "HELDERMAN MARK W — Ownership Dossier"
canonical: https://whiteintel.dev/entity/e4db854f-bbb0-588c-9e4b-c00938b10a3d
json: https://whiteintel.dev/api/public/dossier/e4db854f-bbb0-588c-9e4b-c00938b10a3d
identifier: sec:0001766621
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# HELDERMAN MARK W

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001766621`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/e4db854f-bbb0-588c-9e4b-c00938b10a3d  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/e4db854f-bbb0-588c-9e4b-c00938b10a3d  

## Ownership & control

### Holdings / subsidiaries

- **ONEOK INC /NEW/** (director) — https://whiteintel.dev/entity/b478ec1a-be37-59e6-b71a-28a0e3d75839

## 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 **HELDERMAN MARK W** — https://whiteintel.dev/entity/e4db854f-bbb0-588c-9e4b-c00938b10a3d · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **HELDERMAN MARK W**. Human view: https://whiteintel.dev/entity/e4db854f-bbb0-588c-9e4b-c00938b10a3d · Structured JSON: https://whiteintel.dev/api/public/dossier/e4db854f-bbb0-588c-9e4b-c00938b10a3d._

_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"._