People · Operator
Named in public records as an officer, director or promoter · active 2009–2024 · Other Technology, Other, Software / Tech, Media & Content
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Hungry Machine Inc | — | Other Technology | Series D+ | $1.1B | $50.3M | 2009 |
| Booker Software, Inc. | — | Other | Series B | $75.5M | $456.9M | 2011 |
| Passport Labs, Inc. | — | Software / Tech | Series C | $52.0M | $1.4B | 2013 |
| Zenoss Inc | — | Other Technology | Series B | $40.8M | $49.1M | 2019 |
| ICX Media, Inc. | — | Media & Content | Series A | $18.0M | $77.1M | 2017 |
| WiserTogether, Inc. | — | Other Technology | Series A | $15.8M | $16.0M | 2013 |
| STAC Inc. | — | Other Technology | Series A | $9.8M | $6.6M | 2024 |
| Rabbu, Inc. | — | Other | Series A | $6.0M | $3.4M | 2023 |
| ARPU Inc | — | Other Technology | Seed | $1.8M | $62.5M | 2009 |
Don Rainey 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 Don Rainey on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| David Steinberg | 2 | 14 |
| David Miller | 1 | 29 |
| Glen Tullman | 1 | 12 |
| Jonathan Perl | 1 | 10 |
| Brian Carney | 1 | 10 |
| Devin Carty | 1 | 10 |
| James Pastoriza | 1 | 9 |
| Ted Maidenberg | 1 | 9 |
| Deepak Sindwani | 1 | 8 |
| Cameron Newton | 1 | 8 |
| Mitch Mumma | 1 | 8 |
| Tige Savage | 1 | 6 |
| Bret Maxwell | 1 | 6 |
| Irwin Federman | 1 | 5 |
| Brad Powers | 1 | 5 |
| Hal Eason | 1 | 5 |
| Michael Avon | 1 | 4 |
| William G. Karpovich | 1 | 4 |
| Jonathan G. Perl | 1 | 3 |
| Jay Mandelbaum | 1 | 3 |
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.