People · Operator
Named in public records as an officer, director or promoter · active 2009–2022 · Retailing, Other Health Care, Pharmaceuticals
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Mad Rabbit Tattoo, Inc. | — | Retailing | Seed | $8.4M | $14.5M | 2021 |
| TecTraum, Inc. | — | Other Health Care | Seed | $7.8M | $36.6M | 2016 |
| TheraVasc Inc. | — | Pharmaceuticals | Seed | $2.6M | $13.3M | 2009 |
John Zak 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 Zak on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| James Smith | 1 | 20 |
| Charles Miller | 1 | 7 |
| Joshua Siegel | 1 | 5 |
| Paul Glass | 1 | 3 |
| Anthony Giordano | 1 | 3 |
| Susan Luria | 1 | 2 |
| Leo A Keevican, Jr. | 1 | 2 |
| John Huston | 1 | 2 |
| Joachim Gfoeller | 1 | 2 |
| Justin J Fargas | 1 | 1 |
| Joachim J Gfoeller | 1 | 1 |
| James J Bonk | 1 | 1 |
| Michael J Verona | 1 | 1 |
| Samuel J Williams III | 1 | 1 |
| James J Smith | 1 | 1 |
| Jeffrey J Gilfix | 1 | 1 |
| Kyle Chan | 1 | 1 |
| William Stuart | 1 | 1 |
| Stewart William | 1 | 1 |
| OLIVER ZAK | 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.