People · Operator

John Springer

Named in public records as an officer, director or promoter · active 2019–2021 · Other Health Care, Biotechnology

2
Companies
3
Filings
$127.6M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
R3 Vascular Inc.Other Health CareSeries C$75.2M$621.1M2019
Nectero Medical IncBiotechnologySeries B$52.5M$259.4M2020
Operator network

John Springer 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.

Christopher M Owens · 3 companies · 1 sharedChristopher M Owe…David M. Neustaedter · 2 companies · 1 sharedDavid M. Neustaed…Mahmood Razavi · 2 companies · 1 sharedMahmood RazaviAmir M. Abolfathi · 1 companies · 1 sharedAmir M. AbolfathiFrederik M. Groenewegen · 1 companies · 1 sharedFrederik M. Groen…JeanMarie Markham · 1 companies · 1 sharedJeanMarie MarkhamJohn M. Springer · 1 companies · 1 sharedJohn M. SpringerKamal M. Ramzipoor · 1 companies · 1 sharedKamal M. RamzipoorKamal Ramzipoor · 1 companies · 1 sharedKamal RamzipoorMichael M. Hurley · 1 companies · 1 sharedMichael M. HurleyNathan M. Harrington · 1 companies · 1 sharedNathan M. Harring…Bruce Roberts · 9 companies · 1 sharedBruce RobertsRobert Whirley · 4 companies · 1 sharedRobert WhirleyAnil Dasu · 2 companies · 1 sharedAnil DasuColin Morrison · 2 companies · 1 sharedColin MorrisonBryan Ziegler · 1 companies · 1 sharedBryan ZieglerJack Springer · 1 companies · 1 sharedJack SpringerR3 Vascular Inc. · $75.2M raisedR3 Vascular Inc.Nectero Medical Inc · $52.5M raisedNectero Medical IncJohn SpringerJS
John Springer Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Bruce Roberts19
Robert Whirley14
Christopher M Owens13
Colin Morrison12
David M. Neustaedter12
Mahmood Razavi12
Anil Dasu12
Michael M. Hurley11
Bryan Ziegler11
Amir M. Abolfathi11
Nathan M. Harrington11
Kamal Ramzipoor11
Jack Springer11
JeanMarie Markham11
Kamal M. Ramzipoor11
Frederik M. Groenewegen11
John M. Springer11

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.