People · Operator

Joseph Schlessinger

Named in public records as an officer, director or promoter · active 2008–2018 · Biotechnology, Pharmaceuticals

2
Companies
6
Filings
$253.2M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Kolltan Pharmaceuticals IncBiotechnologySeries C$137.0M$2.5B2008
Inozyme Pharma, Inc.PharmaceuticalsSeries C$116.2M$2.4B2017
Operator network

Joseph Schlessinger 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.

Peter Hirth · 7 companies · 1 sharedPeter HirthE. Jonathan Soderstrom · 3 companies · 1 sharedE. Jonathan Soder…Gerald McMahon · 3 companies · 1 sharedGerald McMahonJane Pritchett Henderson · 3 companies · 1 sharedJane Pritchett He…Thomas B Neff · 3 companies · 1 sharedThomas B NeffCarolyn F. Sidor · 2 companies · 1 sharedCarolyn F. SidorK. Peter Hirth · 2 companies · 1 sharedK. Peter HirthMichael Schmertzler · 2 companies · 1 sharedMichael Schmertzl…Thomas Neff · 2 companies · 1 sharedThomas NeffW. Bradford Middlekauff · 2 companies · 1 sharedW. Bradford Middl…Alex Bolte · 1 companies · 1 sharedAlex BolteArthur G. Altschul, Jr. · 1 companies · 1 sharedArthur G. Altschu…Axel G. Bolte · 1 companies · 1 sharedAxel G. BolteJoseph B. Schlessinger · 1 companies · 1 sharedJoseph B. Schless…Joseph Peter Schlessinger · 1 companies · 1 sharedJoseph Peter Schl…Paul Jonathan Medeiros · 1 companies · 1 sharedPaul Jonathan Med…Axel Bolte · 6 companies · 2 sharedAxel BolteEdward Mathers · 12 companies · 1 sharedEdward MathersRob Hopfner · 6 companies · 1 sharedRob HopfnerMartin Edwards · 5 companies · 1 sharedMartin EdwardsLynne Sullivan · 3 companies · 1 sharedLynne SullivanDOUGLAS TRECO · 2 companies · 1 sharedDOUGLAS TRECOKolltan Pharmaceuticals Inc · $137.0M raisedKolltan Pharmaceutica…Inozyme Pharma, Inc. · $116.2M raisedInozyme Pharma, Inc.Joseph SchlessingerJS
Joseph Schlessinger Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Axel Bolte26
Edward Mathers112
Peter Hirth17
Rob Hopfner16
Martin Edwards15
Thomas B Neff13
E. Jonathan Soderstrom13
Lynne Sullivan13
Gerald McMahon13
Jane Pritchett Henderson13
Thomas Neff12
DOUGLAS TRECO12
Carolyn F. Sidor12
K. Peter Hirth12
Michael Schmertzler12
W. Bradford Middlekauff12
Axel G. Bolte11
Stanley Jonathan Choy11
Theresa M. LaVallee11
Arthur G. Altschul, Jr.11

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.