People · Operator
Named in public records as an officer, director or promoter · active 2015–2021 · Retailing, Manufacturing
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Hydrobuilder Holdings LLC | — | Retailing | Series B | $26.8M | $140.1M | 2021 |
| SiGNa Chemistry, Inc. | — | Manufacturing | Series B | $24.5M | $268.8M | 2015 |
Michael Lefenfeld 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 Michael Lefenfeld on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| Nael Kassar | 1 | 11 |
| Michael Stone | 1 | 6 |
| Philip Wagenheim | 1 | 4 |
| Christian Friedland | 1 | 3 |
| Michael Rapoport | 1 | 2 |
| Jeffrey Seidel | 1 | 1 |
| Mark A. Lester | 1 | 1 |
| Katherine A. Carney | 1 | 1 |
| Mack A. Knobbe | 1 | 1 |
| David Freelove | 1 | 1 |
| Jordan Weiss | 1 | 1 |
| Joseph Lifschutz | 1 | 1 |
| Avi Levine | 1 | 1 |
| Peter A. Cash | 1 | 1 |
| Markus Hockenson | 1 | 1 |
| Paul A. Krumrine | 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.