People · Operator
Named in public records as an officer, director or promoter · active 2012–2024 · Other Energy
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Proteum Energy, LLC | — | Other Energy | Pre-Seed | $850K | $1.2M | 2023 |
| Midwest Clean Power, LLC | — | Other Energy | Pre-Seed | $500K | $8.1M | 2012 |
John D. Rosenfeld at the center, the companies they're named on, and every other operator named alongside them — an interlock map of shared founding teams, boards and funds. Name-matched, so treat as a research lead.
People named alongside John D. Rosenfeld on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| S. Curtis Johnson | 2 | 5 |
| Thomas C. Niccoli | 2 | 4 |
| Laurence B. Tree, II | 2 | 2 |
| Michael J. Brown | 1 | 6 |
| John S. Horton | 1 | 2 |
| Brian Curtis O'Connor | 1 | 1 |
| Terry C. Kennon | 1 | 1 |
| Greg S. Andrukow | 1 | 1 |
| Walter J. Clarke | 1 | 1 |
| John D. Lang | 1 | 1 |
| Perry J. Fraley | 1 | 1 |
| Trevin D. Vaughn | 1 | 1 |
| Robert D. Saik | 1 | 1 |
| Gregory S. Andrukow | 1 | 1 |
People are matched by normalized name across records; a common name may merge distinct individuals. Treat as a research lead, the same way modeled valuations are directional, not quoted.