People · Operator
Named in public records as an officer, director or promoter · active 2007–2014 · Other Technology, Other
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Tumblr Inc | — | Other Technology | Series C | $115.0M | $2.7B | 2010 |
| Next New Networks, Inc. | — | Other | Series B | $23.4M | $16.6M | 2007 |
| Thirty Labs, Inc. | — | Other Technology | Seed | $2.4M | $49.1M | 2014 |
Fred Seibert 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 Fred Seibert on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| Bijan Sabet | 2 | 9 |
| Ross Levinsohn | 1 | 10 |
| Brad Burnham | 1 | 9 |
| John Borthwick | 1 | 8 |
| JON MILLER | 1 | 8 |
| Roland Van Der Meer | 1 | 5 |
| Dennis Miller | 1 | 3 |
| Pete Perrone | 1 | 3 |
| Craig Cooper | 1 | 2 |
| John Maloney | 1 | 2 |
| Richard Yen | 1 | 2 |
| Jed Simmons | 1 | 1 |
| David Karp | 1 | 1 |
| Liam Collins | 1 | 1 |
| Lance Podell | 1 | 1 |
| Timothey Shey | 1 | 1 |
| Roelof F. Botha | 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.