People · Operator
Named in public records as an officer, director or promoter · active 2023–2023 · Climate / Cleantech
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Battery Electron Transport Associates, Inc. | — | Climate / Cleantech | Pre-Seed | $347K | $2.6M | 2023 |
Stephen M. Tumblin 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 Stephen M. Tumblin on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| David M. Connors | 1 | 1 |
| George C. Hansen | 1 | 1 |
| Clair Rood | 1 | 1 |
| Craig M. Madson | 1 | 1 |
| Elizabeth M. Hansen | 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.