# William McIlwaine Thompson

William McIlwaine Thompson of Addison, TX appears across SEC filings — Form ADV advisers, Form D, Reg A, and crowdfunding offerings. 3 filing roles across Form ADV (2), Form D (1).

## Filings (3)

| Filed | Source | Entity | Role | Location |
| --- | --- | --- | --- | --- |
| 2025-03-26 | Form ADV | [WHITE POST INVESTMENTS, LP](https://search.stillhousedata.com/firm/318943) | LIMITED PARTNER | SAN ANTONIO, TX |
| 2025-04-08 | Form ADV | [FOUNDATION ENERGY MANAGEMENT, LLC](https://search.stillhousedata.com/firm/161141) | ELECTED MANAGER AND MEMBER | ADDISON, TX |
| 2019-12-06 | Form D | [Novus Clean Energy, LLC](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1796006&type=&dateb=&owner=include&count=40) | Director | ADDISON, TX |


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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.