People · Operator

John Barker

Named in public records as an officer, director or promoter · active 2010–2017 · Other Technology, Healthtech

2
Companies
3
Filings
$27.2M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Ecosynthetix IncOther TechnologySeries A$17.2M$198.5M2010
Titan Medical IncHealthtechSeed$10.0M$63.0M2017
Operator network

John Barker 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.

John Van Leeuwen · 3 companies · 1 sharedJohn Van LeeuwenJames Sayre · 2 companies · 1 sharedJames SayreSteven Bloembergen · 2 companies · 1 sharedSteven BloembergenDavid Colcleugh · 1 companies · 1 sharedDavid ColcleughSTEPHEN RANDALL · 5 companies · 1 sharedSTEPHEN RANDALLJohn Schellhorn · 4 companies · 1 sharedJohn SchellhornAnthony J. Giovinazzo · 3 companies · 1 sharedAnthony J. Giovin…David McNally · 3 companies · 1 sharedDavid McNallyCharles Federico · 2 companies · 1 sharedCharles FedericoCraig Leon · 2 companies · 1 sharedCraig LeonMartin Bernholtz · 2 companies · 1 sharedMartin BernholtzBruce Wolff · 1 companies · 1 sharedBruce WolffCary G. Vance · 1 companies · 1 sharedCary G. VanceJohn E. Barker · 1 companies · 1 sharedJohn E. BarkerJohn E. Schellhorn · 1 companies · 1 sharedJohn E. SchellhornJohn R. Valvo · 1 companies · 1 sharedJohn R. ValvoJohn T. Hargrove · 1 companies · 1 sharedJohn T. HargroveJoseph R. Talarico · 1 companies · 1 sharedJoseph R. TalaricoMartin C. Bernholtz · 1 companies · 1 sharedMartin C. Bernhol…Monique L. Delorme · 1 companies · 1 sharedMonique L. DelormePaul Cataford · 1 companies · 1 sharedPaul CatafordPaul L. Cataford · 1 companies · 1 sharedPaul L. CatafordEcosynthetix Inc · $17.2M raisedEcosynthetix IncTitan Medical Inc · $10.0M raisedTitan Medical IncJohn BarkerJB
John Barker Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
STEPHEN RANDALL15
John Schellhorn14
John Van Leeuwen13
David McNally13
Anthony J. Giovinazzo13
Martin Bernholtz12
James Sayre12
Charles Federico12
Craig Leon12
Steven Bloembergen12
Reiza Rayman11
John R. Valvo11
Richard Shatkosky11
Monique L. Delorme11
Paul L. Cataford11
Cary G. Vance11
Stephen G. Randall11
Paul Cataford11
John E. Schellhorn11
Bruce Wolff11

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.