People · Operator

John Greening

Named in public records as an officer, director or promoter · active 2009–2009 · Biotechnology

1
Companies
1
Filings
$807K
Combined raised · real
Single
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Advanced Circulatory Systems IncBiotechnologyPre-Seed$807K$44.6M2009
Operator network

John Greening 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.

Michael Black · 4 companies · 1 sharedMichael BlackSteven Gold · 4 companies · 1 sharedSteven GoldJOHN F. STAPLETON · 3 companies · 1 sharedJOHN F. STAPLETONJoseph Alexander · 2 companies · 1 sharedJoseph AlexanderKeith G. Lurie · 2 companies · 1 sharedKeith G. LurieDavid Benditt · 1 companies · 1 sharedDavid BendittFred Hunter · 1 companies · 1 sharedFred HunterNathan Harris · 1 companies · 1 sharedNathan HarrisAdvanced Circulatory Systems Inc · $0.8M raisedAdvanced Circulatory …John GreeningJG
John Greening Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

People named alongside John Greening on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.

OperatorSharedTheir companies
Michael Black14
Steven Gold14
JOHN F. STAPLETON13
Keith G. Lurie12
Joseph Alexander12
Fred Hunter11
David Benditt11
Nathan Harris11

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.