---
title: "WALKER JOHN B — Ownership Dossier"
canonical: https://whiteintel.dev/entity/674a3441-05e0-524a-8332-cd669fe2d9bf
json: https://whiteintel.dev/api/public/dossier/674a3441-05e0-524a-8332-cd669fe2d9bf
identifier: sec:0001374442
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# WALKER JOHN B

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001374442`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/674a3441-05e0-524a-8332-cd669fe2d9bf  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/674a3441-05e0-524a-8332-cd669fe2d9bf  

## Ownership & control

### Holdings / subsidiaries

- **Magnolia Oil & Gas Corp** (director) — https://whiteintel.dev/entity/ffd861eb-7015-5281-92c5-2218393c446e
- **Magnolia Oil & Gas Corp** (tenpercentowner) — https://whiteintel.dev/entity/ffd861eb-7015-5281-92c5-2218393c446e
- **EV ENERGY PARTNERS, LP** (director) — https://whiteintel.dev/entity/fcc4079e-23e3-5002-b826-0d65d2dcf5d0
- **EV ENERGY PARTNERS, LP** (officer) — https://whiteintel.dev/entity/fcc4079e-23e3-5002-b826-0d65d2dcf5d0
- **PETROLOGISTICS LP** (director) — https://whiteintel.dev/entity/ef5babc6-29c1-54cb-b159-b52c144ed16c
- **EV ENERGY PARTNERS, LP** (tenpercentowner) — https://whiteintel.dev/entity/fcc4079e-23e3-5002-b826-0d65d2dcf5d0

## 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 **WALKER JOHN B** — https://whiteintel.dev/entity/674a3441-05e0-524a-8332-cd669fe2d9bf · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **WALKER JOHN B**. Human view: https://whiteintel.dev/entity/674a3441-05e0-524a-8332-cd669fe2d9bf · Structured JSON: https://whiteintel.dev/api/public/dossier/674a3441-05e0-524a-8332-cd669fe2d9bf._

_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"._