People · Operator
Named in public records as an officer, director or promoter · active 2024–2024 · Other Health Care
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| R3 Vascular Inc. | — | Other Health Care | Series C | $75.2M | $621.1M | 2024 |
John M. Springer 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 M. Springer on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| Christopher M Owens | 1 | 3 |
| John Springer | 1 | 2 |
| David M. Neustaedter | 1 | 2 |
| Mahmood Razavi | 1 | 2 |
| JeanMarie Markham | 1 | 1 |
| Amir M. Abolfathi | 1 | 1 |
| Nathan M. Harrington | 1 | 1 |
| Kamal Ramzipoor | 1 | 1 |
| Kamal M. Ramzipoor | 1 | 1 |
| Frederik M. Groenewegen | 1 | 1 |
| Michael M. Hurley | 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.