People · Operator

Jonathan G. Fenster

Named in public records as an officer, director or promoter · active 2019–2019 · Pharmaceuticals

1
Companies
1
Filings
$506K
Combined raised · real
Single
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Sincerus Pharmaceuticals IncPharmaceuticalsPre-Seed$506K$23.9M2019
Operator network

Jonathan G. Fenster 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.

Spencer J. Malkin · 2 companies · 1 sharedSpencer J. MalkinBarret S. Malkin · 1 companies · 1 sharedBarret S. MalkinLouis Jack Staley · 1 companies · 1 sharedLouis Jack StaleyMichael S. Gleit · 1 companies · 1 sharedMichael S. GleitSincerus Pharmaceuticals Inc · $0.5M raisedSincerus Pharmaceutic…Jonathan G. FensterJF
Jonathan G. Fenster Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Spencer J. Malkin12
Louis Jack Staley11
Barret S. Malkin11
Michael S. Gleit11

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.