People · Operator

Jonathan Kagan

Named in public records as an officer, director or promoter · active 2012–2025 · Pharmaceuticals, Other Technology, Other

3
Companies
6
Filings
$77.9M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Corner Therapeutics, Inc.PharmaceuticalsSeries C$75.3M$95.3M2023
Marlborough Software Development Holdings Inc.Other TechnologySeed$2.0M$68.1M2012
Aurania Resources Ltd.OtherPre-Seed$663K$10.9M2021
Operator network

Jonathan Kagan 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.

Steven Altschuler · 5 companies · 1 sharedSteven AltschulerAlan Ezekowitz · 4 companies · 1 sharedAlan EzekowitzJeffrey Karp · 3 companies · 1 sharedJeffrey KarpAndrew Bellinger · 2 companies · 1 sharedAndrew BellingerRichard Malley · 2 companies · 1 sharedRichard MalleySteve Altschuler · 2 companies · 1 sharedSteve AltschulerAndrew Cornforth · 1 companies · 1 sharedAndrew CornforthGarrett Nichols · 1 companies · 1 sharedGarrett NicholsNichols Garrett · 1 companies · 1 sharedNichols GarrettNick Seaver · 1 companies · 1 sharedNick SeaverMelvin Keating · 2 companies · 1 sharedMelvin KeatingAmos Kaminski · 1 companies · 1 sharedAmos KaminskiJames Dore · 1 companies · 1 sharedJames DorePinhas Romik · 1 companies · 1 sharedPinhas RomikRaul Martynek · 1 companies · 1 sharedRaul MartynekKeith Barron · 2 companies · 1 sharedKeith BarronAlfred Lenarciak · 1 companies · 1 sharedAlfred LenarciakAntony Wood · 1 companies · 1 sharedAntony WoodCarolyn Muir · 1 companies · 1 sharedCarolyn MuirDr. Richard Spencer · 1 companies · 1 sharedDr. Richard Spenc…Jean Paul Pallier · 1 companies · 1 sharedJean Paul PallierNathalie Han · 1 companies · 1 sharedNathalie HanCorner Therapeutics, Inc. · $75.3M raisedCorner Therapeutics, …Marlborough Software Development Holdings Inc. · $2.0M raisedMarlborough Software …Aurania Resources Ltd. · $0.7M raisedAurania Resources Ltd.Jonathan KaganJK
Jonathan Kagan Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Steven Altschuler15
Alan Ezekowitz14
Jeffrey Karp13
Andrew Bellinger12
Richard Malley12
Keith Barron12
Melvin Keating12
Steve Altschuler12
Warren Gillman11
Dr. Richard Spencer11
Alfred Lenarciak11
Nathalie Han11
Raul Martynek11
Amos Kaminski11
Pinhas Romik11
James Dore11
Nick Seaver11
Andrew Cornforth11
Garrett Nichols11
Nichols Garrett11

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.