People · Operator
Named in public records as an officer, director or promoter · active 2011–2025 · Biotechnology, Sports & Fitness, Other
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Foresight Biotherapeutics, Inc. | — | Biotechnology | Series A | $17.0M | $542.3M | 2011 |
| Front Office Sports, LLC | — | Sports & Fitness | Series A | $12.7M | $72.8M | 2023 |
| KAC Holding Co LLC | — | Other | Seed | $4.0M | $13.5M | 2025 |
JASON STEIN 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 JASON STEIN on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| Michael Weiser | 1 | 5 |
| Adam White | 1 | 3 |
| Daniel Haimovic | 1 | 2 |
| David Castelblanco | 1 | 2 |
| Justin Weiner | 1 | 1 |
| STEPHEN ROCAMBOLI | 1 | 1 |
| Corey Katz | 1 | 1 |
| Joshua Wechter | 1 | 1 |
| Jeff Zucker | 1 | 1 |
| Fara Leff | 1 | 1 |
| Gregory Perez | 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.