People · Operator
Named in public records as an officer, director or promoter · active 2022–2024 · Other Health Care, Software / Tech
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| ArborMetrix, Inc. | — | Other Health Care | Series A | $31.2M | $38.4M | 2022 |
| NAVV Systems, Inc. | — | Software / Tech | Series A | $9.7M | $9.7M | 2022 |
Maria Siambekos 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 Maria Siambekos on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| Timothy Petersen | 2 | 9 |
| Paul McCreadie | 2 | 6 |
| Mark McClellan | 1 | 3 |
| Timothy Peterson | 1 | 2 |
| Daniel Siegal | 1 | 2 |
| Anthony Grover | 1 | 2 |
| John Birkmeyer | 1 | 1 |
| Kurt Skifstad | 1 | 1 |
| Steve Richvalsky | 1 | 1 |
| John Groetelaars | 1 | 1 |
| Paul Zieske | 1 | 1 |
| Jeffrey Pagnini | 1 | 1 |
| Greg Erber | 1 | 1 |
| John Birkmeyer, M.D. | 1 | 1 |
| Brett Furst | 1 | 1 |
| Gary Kendra | 1 | 1 |
| Christian Birkmeyer | 1 | 1 |
| Steven Richvalsky | 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.