People · Operator
Named in public records as an officer, director or promoter · active 2016–2025 · Other Health Care, Biotechnology, Other
| Company | Role | Sector | Stage | Raised · real | Value · est | Tied |
|---|---|---|---|---|---|---|
| Zyus Life Sciences Inc. | — | Other Health Care | Series B | $40.4M | $10.4M | 2018 |
| Prairie Plant Systems Inc. | — | Biotechnology | Series A | $6.5M | $233.9M | 2016 |
| PM Michigan Inc. | — | Other | Pre-Seed | $1.0M | $3.4M | 2021 |
| Zyus Life Sciences Corp | — | Other Health Care | Pre-Seed | $692K | $1.6M | 2024 |
Brent Zettl 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 Brent Zettl on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.
| Operator | Shared | Their companies |
|---|---|---|
| John Knowles | 3 | 4 |
| Richard Hoyt | 2 | 3 |
| John Hyshka | 2 | 3 |
| Keith Carpenter | 2 | 3 |
| Michelle Gursky | 2 | 2 |
| Garnette Weber | 2 | 2 |
| Brandon Price | 1 | 4 |
| Donald Ching | 1 | 2 |
| Larry Holbrook | 1 | 2 |
| Dwayne Lashyn | 1 | 2 |
| Marianne Greer | 1 | 2 |
| Rob Duguid | 1 | 2 |
| Bruce Mackler | 1 | 2 |
| Wayne Brownlee | 1 | 1 |
| Don Ching | 1 | 1 |
| Adam Darbellay | 1 | 1 |
| Allan Fowler | 1 | 1 |
| Raymond Pierpont | 1 | 1 |
| Zachary Halkola | 1 | 1 |
| Doug Banset | 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.