People · Operator

John Brennan

Named in public records as an officer, director or promoter · active 2009–2023 · Biotechnology, Other Technology, Software / Tech, Other, Environmental Services

9
Companies
16
Filings
$1.4B
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
ImmunityBio, Inc.BiotechnologyGrowth/Late$640.1M$7.8B2022
Axonius, Inc.Other TechnologySeries D+$570.5M$705.0M2020
Digital Reasoning Systems, Inc.Software / TechSeries B$80.5M$913.8M2011
Avi-Spl Holdings, Inc.OtherSeries A$28.0M$227.0M2009
Buildium, LLCOther TechnologySeries B$18.8M$572.2M2016
Momento Market, Inc.Other TechnologySeries A$9.9M$154.3M2021
FINEOS Corp Holdings PLCOther TechnologySeries A$8.3M$218.6M2020
HereNow Help, Inc.Other TechnologySeed$6.4M$16.6M2019
Exacter, Inc.Environmental ServicesSeed$3.0M$82.7M2013
Operator network

John Brennan 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.

Patrick Soon-Shiong · 16 companies · 1 sharedPatrick Soon-Shio…Wesley Clark · 7 companies · 1 sharedWesley ClarkDavid Sachs · 5 companies · 1 sharedDavid SachsJohn C. Thomas, Jr. · 5 companies · 1 sharedJohn C. Thomas, J…Barry Simon · 3 companies · 1 sharedBarry SimonCheryl Cohen · 3 companies · 1 sharedCheryl CohenSteve J. Gorlin · 3 companies · 1 sharedSteve J. GorlinKen Fox · 3 companies · 1 sharedKen FoxKenneth Fox · 3 companies · 1 sharedKenneth FoxTal Morgenstern · 3 companies · 1 sharedTal MorgensternJodi Hubler · 8 companies · 1 sharedJodi HublerBrett Jackson · 5 companies · 1 sharedBrett JacksonJonathan T. Lord · 5 companies · 1 sharedJonathan T. LordCristobal Conde · 4 companies · 1 sharedCristobal CondeRana Yared · 4 companies · 1 sharedRana YaredPrakash Ramachandran · 3 companies · 1 sharedPrakash Ramachand…Robert Metcalf · 3 companies · 1 sharedRobert MetcalfAjay Shah · 7 companies · 1 sharedAjay ShahMichael Monteiro · 3 companies · 1 sharedMichael MonteiroMark Daniel · 3 companies · 1 sharedMark DanielMichael Kelly · 11 companies · 1 sharedMichael KellyDavid Hollander · 3 companies · 1 sharedDavid HollanderImmunityBio, Inc. · $640.1M raisedImmunityBio, Inc.Axonius, Inc. · $570.5M raisedAxonius, Inc.Digital Reasoning Systems, Inc. · $80.5M raisedDigital Reasoning Sys…Avi-Spl Holdings, Inc. · $28.0M raisedAvi-Spl Holdings, Inc.Buildium, LLC · $18.8M raisedBuildium, LLCMomento Market, Inc. · $9.9M raisedMomento Market, Inc.FINEOS Corp Holdings PLC · $8.3M raisedFINEOS Corp Holdings …HereNow Help, Inc. · $6.4M raisedHereNow Help, Inc.Exacter, Inc. · $3.0M raisedExacter, Inc.John BrennanJB
John Brennan Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Patrick Soon-Shiong116
Michael Kelly111
Jodi Hubler18
Ajay Shah17
Wesley Clark17
Brett Jackson15
Jonathan T. Lord15
David Sachs15
John C. Thomas, Jr.15
Cristobal Conde14
Rana Yared14
Cheryl Cohen13
Prakash Ramachandran13
Mark Daniel13
Tal Morgenstern13
Kenneth Fox13
David Hollander13
Steve J. Gorlin13
Barry Simon13
Robert Metcalf13

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.