People · Operator
Named in public records as an officer, director or promoter · active 2009–2022 · Biotechnology, Software / Tech, Manufacturing, Tourism and Travel Services, Other Technology
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Exagen Diagnostics Inc | — | Biotechnology | Series B | $88.5M | $261.4M | 2009 |
| Green Theme Technologies, Inc. | — | Software / Tech | Series A | $22.7M | $29.7M | 2021 |
| Growstone, Inc. | — | Manufacturing | Seed | $12.0M | $14.7M | 2012 |
| JackRabbit Systems, Inc. | — | Tourism and Travel Services | Seed | $4.7M | $20.7M | 2009 |
| AgilVax, Inc. | — | Biotechnology | Seed | $4.2M | $133.2M | 2018 |
| Growstone, LLC | — | Manufacturing | Seed | $2.6M | $26.1M | 2011 |
| Aspen Avionics, Inc. | — | Other Technology | Seed | $2.1M | $72.7M | 2014 |
| Lumidigm Inc | — | Other Technology | Seed | $2.1M | $71.6M | 2010 |
Brian Birk 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 Brian Birk on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| David Blivin | 2 | 14 |
| Waneta C. Tuttle | 2 | 4 |
| Ivan Faggen | 2 | 3 |
| Matt Culler | 2 | 3 |
| John Bessone | 2 | 2 |
| Gavin Christensen | 1 | 23 |
| Dinesh Patel | 1 | 13 |
| Chris Erickson | 1 | 10 |
| Scott L. Glenn | 1 | 9 |
| Ebetuel Pallares | 1 | 7 |
| James L.L. Tullis | 1 | 6 |
| Harry George | 1 | 6 |
| Waneta Tuttle | 1 | 6 |
| Lee Rand | 1 | 5 |
| Srinivas Rao | 1 | 4 |
| Eric Zimits | 1 | 4 |
| Brad Vale | 1 | 4 |
| Stuart Rose | 1 | 4 |
| Scott Glenn | 1 | 4 |
| Faith Charles | 1 | 4 |
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.