People · Operator

John Harper

Named in public records as an officer, director or promoter · active 2009–2024 · Biotechnology, Energy Conservation, Healthtech

3
Companies
10
Filings
$22.8M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Axogen CorpBiotechnologySeed$14.3M$133.2M2009
60Hertz IncEnergy ConservationSeed$4.5M$16.7M2023
Triopsy Medical, Inc.HealthtechSeed$4.1M$571K2022
Operator network

John Harper 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.

Gerard Van Hamel Platerink · 6 companies · 1 sharedGerard Van Hamel …Joe Mandato · 5 companies · 1 sharedJoe MandatoJamie Grooms · 4 companies · 1 sharedJamie GroomsJamie M. Grooms · 4 companies · 1 sharedJamie M. GroomsMark Gold · 3 companies · 1 sharedMark GoldJohn Engels · 2 companies · 1 sharedJohn EngelsJohn P. Engels · 2 companies · 1 sharedJohn P. EngelsKaren Zaderej · 2 companies · 1 sharedKaren ZaderejLisa Skeete Tatum · 2 companies · 1 sharedLisa Skeete TatumBrad Hedger · 1 companies · 1 sharedBrad HedgerGerd Goette · 6 companies · 1 sharedGerd GoetteSusan Preston · 4 companies · 1 sharedSusan PrestonMark Hormann · 2 companies · 1 sharedMark HormannMorgan DeFoort · 2 companies · 1 sharedMorgan DeFoortBrad Buscher · 4 companies · 1 sharedBrad BuscherJames Lousararian · 3 companies · 1 sharedJames LousararianNelson Stone · 3 companies · 1 sharedNelson StoneRichard Larson · 3 companies · 1 sharedRichard LarsonTodd Anderson · 2 companies · 1 sharedTodd AndersonBrad David Buscher · 1 companies · 1 sharedBrad David BuscherDavid Bostwick · 1 companies · 1 sharedDavid BostwickDavid Crawford, MD · 1 companies · 1 sharedDavid Crawford, MDAxogen Corp · $14.3M raisedAxogen Corp60Hertz Inc · $4.5M raised60Hertz IncTriopsy Medical, Inc. · $4.1M raisedTriopsy Medical, Inc.John HarperJH
John Harper Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Gerd Goette16
Gerard Van Hamel Platerink16
Joe Mandato15
Brad Buscher14
Jamie M. Grooms14
Susan Preston14
Jamie Grooms14
James Lousararian13
Mark Gold13
Nelson Stone13
Richard Larson13
Morgan DeFoort12
Lisa Skeete Tatum12
Karen Zaderej12
Mark Hormann12
John Engels12
John P. Engels12
Todd Anderson12
E. David Crawford11
David Crawford, MD11

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.