People · Operator
Named in public records as an officer, director or promoter · active 2009–2017 · Investment Vehicle, Business Services, Biotechnology
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Plymouth Growth Partners Iv, L.P. | — | Investment Vehicle | Series C | $70.7M | $1.2B | 2017 |
| XanEdu Publishing, Inc. | — | Business Services | Series A | $11.7M | $62.1M | 2015 |
| Solulink Inc | — | Biotechnology | Seed | $3.3M | $19.1M | 2009 |
Mark Horne 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 Mark Horne on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| Evan Ufer | 2 | 4 |
| John Miller | 1 | 27 |
| David Schwartz | 1 | 7 |
| Brook Critchfield | 1 | 6 |
| JEFF BARRY | 1 | 5 |
| Kevin Terrasi | 1 | 5 |
| Tim Mayleben | 1 | 4 |
| Jack Ball, Jr. | 1 | 2 |
| Walter Young, Jr. | 1 | 2 |
| Howard Sampson | 1 | 2 |
| Scott Hauncher | 1 | 2 |
| Yossie Hollander | 1 | 1 |
| Andrew Wiegand | 1 | 1 |
| Caroline Vanderlip | 1 | 1 |
| Steve DeGraw | 1 | 1 |
| Stephen DeGraw | 1 | 1 |
| David McCarty | 1 | 1 |
| Jason Plackowski | 1 | 1 |
| John DeBoer | 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.