People · Operator
Named in public records as an officer, director or promoter · active 2011–2020 · Hospitals and Physicians, Other Technology
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Emerus Holdings, Inc. | — | Hospitals and Physicians | Series B | $30.0M | $618.1M | 2011 |
| Round River Research Corp | — | Other Technology | Seed | $8.0M | $425K | 2019 |
John Buck 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 Buck on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| Dan Cohen | 1 | 4 |
| Ellen Cohen | 1 | 2 |
| John Gabbert | 1 | 2 |
| Toby Hamilton | 1 | 2 |
| Mike Koenigs | 1 | 1 |
| Maximillian Fiore | 1 | 1 |
| Bob Hiben | 1 | 1 |
| Douglas Cooper | 1 | 1 |
| Andrew Painter | 1 | 1 |
| Peter Weissman | 1 | 1 |
| Homer David Kirby | 1 | 1 |
| Rajiv Tandon | 1 | 1 |
| Robert Hiben | 1 | 1 |
| Doug Cooper | 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.