People · Operator

John Koster

Named in public records as an officer, director or promoter · active 2018–2021 · Other Technology

1
Companies
4
Filings
$4.3M
Combined raised · real
Single
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
2Morrow, Inc.Other TechnologySeed$4.3M$80.0M2018
Operator network

John Koster 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.

Eric Larsen · 4 companies · 1 sharedEric LarsenBrandon Masterson · 1 companies · 1 sharedBrandon MastersonJo Masterson · 1 companies · 1 sharedJo MastersonKim Hansen · 1 companies · 1 sharedKim Hansen2Morrow, Inc. · $4.3M raised2Morrow, Inc.John KosterJK
John Koster Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Eric Larsen14
Jo Masterson11
Brandon Masterson11
Kim Hansen11

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.