---
title: "OBERNDORF WILLIAM E — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d6b80297-7254-51b0-aede-e89fc2498f75
json: https://whiteintel.dev/api/public/dossier/d6b80297-7254-51b0-aede-e89fc2498f75
identifier: sec:0001218663
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# OBERNDORF WILLIAM E

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001218663`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/d6b80297-7254-51b0-aede-e89fc2498f75  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d6b80297-7254-51b0-aede-e89fc2498f75  

## Ownership & control

### Holdings / subsidiaries

- **CABOT CORP** (tenpercentowner) — https://whiteintel.dev/entity/c2737fda-a3d0-5cba-8c4f-63a0af825ad7
- **APPFOLIO INC** (other) — https://whiteintel.dev/entity/13ef8659-e6dd-52c1-aece-22fcb3b50958
- **APPFOLIO INC** (tenpercentowner) — https://whiteintel.dev/entity/13ef8659-e6dd-52c1-aece-22fcb3b50958
- **LAMAR ADVERTISING CO/NEW** (tenpercentowner) — https://whiteintel.dev/entity/1c5055f2-e6b6-56ab-8102-113fac3fd4aa
- **ADVENT SOFTWARE INC /DE/** (tenpercentowner) — https://whiteintel.dev/entity/bfcac844-2cd8-5c5e-8087-9ef1ef4fe3c4
- **CALPINE CORP** (director) — https://whiteintel.dev/entity/9ba55869-961b-5b6e-9096-df3aeab543f1
- **CIMAREX RESOLUTE LLC** (tenpercentowner) — https://whiteintel.dev/entity/00682546-bd19-50d8-8f83-fe433076aa1e
- **CALPINE CORP** (tenpercentowner) — https://whiteintel.dev/entity/9ba55869-961b-5b6e-9096-df3aeab543f1
- **QUICKSILVER RESOURCES INC** (tenpercentowner) — https://whiteintel.dev/entity/b1931c39-f15f-583d-8710-2d6bfc51105c
- **Chord Energy Corp** (tenpercentowner) — https://whiteintel.dev/entity/7dd49e1f-3cfe-5cdc-bb03-6d7c6e467185
- **OPTIMA PETROLEUM CORP** (tenpercentowner) — https://whiteintel.dev/entity/a9372ba9-9a22-56b9-9daf-d9c5f1b29ee5
- **CROWN CASTLE INC.** (tenpercentowner) — https://whiteintel.dev/entity/2c69ef6b-bd26-5f6b-9983-4dd2700edd7c

…and **5** more subsidiaries/holdings. Resolve the full list with `get_dossier` on the WhiteIntel MCP (`npx -y @whiteintel/mcp-server`) or a one-off dossier — https://whiteintel.dev/pricing.

## 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 **OBERNDORF WILLIAM E** — https://whiteintel.dev/entity/d6b80297-7254-51b0-aede-e89fc2498f75 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **OBERNDORF WILLIAM E**. Human view: https://whiteintel.dev/entity/d6b80297-7254-51b0-aede-e89fc2498f75 · Structured JSON: https://whiteintel.dev/api/public/dossier/d6b80297-7254-51b0-aede-e89fc2498f75._

_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"._