People · Operator
Named in public records as an officer, director or promoter · active 2024–2025 · Other Energy
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Circon Energy Puerto Rico, LLC | — | Other Energy | Series A | $7.0M | $27.7M | 2024 |
| Circon International, LLC | — | Other Energy | Seed | $4.0M | $10.3M | 2025 |
David L Duren 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 David L Duren on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| Jason L Frazer | 2 | 2 |
| Tim Lee Brwon | 1 | 1 |
| Shon Lee Conley | 1 | 1 |
| Tim R Brown | 1 | 1 |
| Frank L Giacalone | 1 | 1 |
| Adam Shon Brock | 1 | 1 |
| Frank Lee Giacalone | 1 | 1 |
| Michael Shon Conley | 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.