People · Operator

Mark Brookner

Named in public records as an officer, director or promoter · active 2009–2019 · Other Health Care, Other Energy

3
Companies
5
Filings
$53.4M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
GHR Acquisition, LLCOther Health CareSeries B$35.3M$123.9M2017
Hydro Ex Acquisition, LLCOther EnergySeries A$14.6M$154.0M2012
Newco Environmental, LLCOther EnergySeed$3.6M$46.7M2009
Operator network

Mark Brookner 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.

Fred Brown · 5 companies · 1 sharedFred BrownJanet Elkin · 2 companies · 1 sharedJanet ElkinBradley Morgan · 1 companies · 1 sharedBradley MorganCheryl Wilhelm · 1 companies · 1 sharedCheryl WilhelmGordon Michael Dunagan · 1 companies · 1 sharedGordon Michael Du…Jeffrey Crater · 1 companies · 1 sharedJeffrey CraterLaura Magner · 1 companies · 1 sharedLaura MagnerScott Nichols · 1 companies · 1 sharedScott NicholsVik Kalra · 1 companies · 1 sharedVik KalraJoseph Kaplan · 6 companies · 3 sharedJoseph KaplanJoseph O'Neill · 3 companies · 3 sharedJoseph O'NeillLivingston Kosberg · 3 companies · 3 sharedLivingston KosbergCurtis Hartman · 1 companies · 1 sharedCurtis HartmanDonald Bradley Freedman · 1 companies · 1 sharedDonald Bradley Fr…James Bradley Davis · 1 companies · 1 sharedJames Bradley Dav…Matt Bradley Weisser · 1 companies · 1 sharedMatt Bradley Weis…Robert Hillin · 1 companies · 1 sharedRobert HillinMike Brown · 6 companies · 1 sharedMike BrownDan Arnold · 2 companies · 1 sharedDan ArnoldGordon Beittenmiller · 2 companies · 1 sharedGordon Beittenmil…Donald Freedman · 1 companies · 1 sharedDonald FreedmanGHR Acquisition, LLC · $35.3M raisedGHR Acquisition, LLCHydro Ex Acquisition, LLC · $14.6M raisedHydro Ex Acquisition,…Newco Environmental, LLC · $3.6M raisedNewco Environmental, …Mark BrooknerMB
Mark Brookner Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Joseph Kaplan36
Livingston Kosberg33
Joseph O'Neill33
Mike Brown16
Fred Brown15
Dan Arnold12
Janet Elkin12
Gordon Beittenmiller12
Bradley Morgan11
Vik Kalra11
Jeffrey Crater11
Cheryl Wilhelm11
Laura Magner11
Gordon Michael Dunagan11
Scott Nichols11
Robert Hillin11
Matt Bradley Weisser11
James Bradley Davis11
Curtis Hartman11
Donald Bradley Freedman11

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.