People · Operator

John Fein

Named in public records as an officer, director or promoter · active 2018–2025 · Other, Computers, Other Technology, Proptech / Real Estate

5
Companies
14
Filings
$57.3M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
HData, Inc.OtherSeries A$19.5M$7.8M2021
8base Inc.ComputersSeries A$15.3M$177.1M2022
LODAS Markets, Inc.Other TechnologySeries A$12.0M$9.8M2022
Mint Apartment Cleaning, Inc.Proptech / Real EstateSeed$9.3M$4.6M2020
Sickweather, Inc.Other TechnologyPre-Seed$1.3M$27.7M2018
Operator network

John Fein 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.

ZEPHRIN LASKER · 2 companies · 1 sharedZEPHRIN LASKERGRAHAM DODGE · 1 companies · 1 sharedGRAHAM DODGEJAMES SAJOR · 1 companies · 1 sharedJAMES SAJORAmy Francetic · 5 companies · 1 sharedAmy FranceticAllison Myers · 2 companies · 1 sharedAllison MyersMithun Banarjee · 2 companies · 1 sharedMithun BanarjeeAnthony Mealey · 1 companies · 1 sharedAnthony MealeyChris Danusiar · 1 companies · 1 sharedChris DanusiarHudson Hollister · 1 companies · 1 sharedHudson HollisterChris Moody · 9 companies · 1 sharedChris MoodyAlbert Santalo · 2 companies · 1 sharedAlbert SantaloJeremy Smith · 6 companies · 1 sharedJeremy SmithGary Fish · 3 companies · 1 sharedGary FishBrian King · 2 companies · 1 sharedBrian KingRobert K Green · 2 companies · 1 sharedRobert K GreenSteven K. Braun · 2 companies · 1 sharedSteven K. BraunAnnemarie Tierney · 1 companies · 1 sharedAnnemarie TierneyBrian M. King · 1 companies · 1 sharedBrian M. KingBrian Taylor · 3 companies · 1 sharedBrian TaylorKeith Nelson · 3 companies · 1 sharedKeith NelsonJames Rabinowitz · 2 companies · 1 sharedJames RabinowitzJoanna Gornikowski · 2 companies · 1 sharedJoanna GornikowskiHData, Inc. · $19.5M raisedHData, Inc.8base Inc. · $15.3M raised8base Inc.LODAS Markets, Inc. · $12.0M raisedLODAS Markets, Inc.Mint Apartment Cleaning, Inc. · $9.3M raisedMint Apartment Cleani…Sickweather, Inc. · $1.3M raisedSickweather, Inc.John FeinJF
John Fein Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Chris Moody19
Jeremy Smith16
Amy Francetic15
Gary Fish13
Brian Taylor13
Keith Nelson13
Robert K Green12
James Rabinowitz12
Mithun Banarjee12
Allison Myers12
Brian King12
Steven K. Braun12
ZEPHRIN LASKER12
Albert Santalo12
Joanna Gornikowski12
Noraan Sadik11
Chris Danusiar11
Jon McCulloch11
Kathleen Wilson11
MICHAEL BELT11

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.