People · Operator
Named in public records as an officer, director or promoter · active 2020–2025 · Software / Tech, Healthtech
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Ria Technology Management Inc. | — | Software / Tech | Series B | $32.8M | $39.0M | 2024 |
| HealthPlan One Holdings, Inc. | — | Healthtech | Series B | $28.6M | $621.6M | 2020 |
William Stapleton 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 William Stapleton on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| Michael Balmuth | 1 | 5 |
| Kevin Hill | 1 | 4 |
| Christopher Miller | 1 | 4 |
| Michal Petrzela | 1 | 3 |
| Boris Rapoport | 1 | 2 |
| Carol Vallone | 1 | 2 |
| Aimee Peters | 1 | 1 |
| Mike Stapleton | 1 | 1 |
| Martin Rosenzweig | 1 | 1 |
| Thomas Nix | 1 | 1 |
| John Mendelson | 1 | 1 |
| Robert Nix | 1 | 1 |
| Theodore Lundberg | 1 | 1 |
| Jim Foreman | 1 | 1 |
| David Deacon | 1 | 1 |
| Susan Harrington | 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.