People · Operator

John Butler

Named in public records as an officer, director or promoter · active 2009–2025 · Biotechnology, Other, Other Health Care

5
Companies
7
Filings
$54.7M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Nuclein, LLCBiotechnologySeries A$34.5M$48.3M2023
DigitalBridge Communications Holdings Corp.OtherSeries B$18.2M$303.0M2009
Quantumcyte Inc.Other Health CareSeed$1.1M$7.2M2023
Echo Testing Group, LLCOther Health CarePre-Seed$630K$18.2M2020
Fresh Mat Inc.OtherPre-Seed$325K$7.5M2016
Operator network

John Butler 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.

Sanjay Chandra · 11 companies · 1 sharedSanjay ChandraWilliam Cunningham · 3 companies · 1 sharedWilliam CunninghamH. David Shockley · 2 companies · 1 sharedH. David ShockleyAlan Blake · 1 companies · 1 sharedAlan BlakeDavid Shockley · 1 companies · 1 sharedDavid ShockleyDouglas Bryant · 1 companies · 1 sharedDouglas BryantJeffrey David Stukuls · 1 companies · 1 sharedJeffrey David Stu…Richard Crockett · 1 companies · 1 sharedRichard CrockettWalter David Narajowski · 1 companies · 1 sharedWalter David Nara…Walter Narajowski · 1 companies · 1 sharedWalter NarajowskiJOE DEL GUERCIO · 4 companies · 1 sharedJOE DEL GUERCIOTom Scholl · 4 companies · 1 sharedTom SchollJoseph S. Kochan · 1 companies · 1 sharedJoseph S. KochanNiloo Howe · 1 companies · 1 sharedNiloo HoweP. Kelley Dunne · 1 companies · 1 sharedP. Kelley DunneSteve Bing · 1 companies · 1 sharedSteve BingWilliam F. Wallace · 1 companies · 1 sharedWilliam F. WallaceDouglas Baum · 3 companies · 1 sharedDouglas BaumGary Cadenhead · 1 companies · 1 sharedGary CadenheadPeter Cleaves · 1 companies · 1 sharedPeter CleavesPhil Speros · 1 companies · 1 sharedPhil SperosNuclein, LLC · $34.5M raisedNuclein, LLCDigitalBridge Communications Holdings Corp. · $18.2M raisedDigitalBridge Communi…Quantumcyte Inc. · $1.1M raisedQuantumcyte Inc.Echo Testing Group, LLC · $0.6M raisedEcho Testing Group, L…Fresh Mat Inc. · $0.3M raisedFresh Mat Inc.John ButlerJB
John Butler Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Sanjay Chandra111
Tom Scholl14
JOE DEL GUERCIO14
William Cunningham13
Douglas Baum13
H. David Shockley12
Walter Narajowski11
David Shockley11
Gary Cadenhead11
Phil Speros11
Peter Cleaves11
P. Kelley Dunne11
Niloo Howe11
Joseph S. Kochan11
William F. Wallace11
Steve Bing11
Alan Blake11
Richard Crockett11
Douglas Bryant11
Walter David Narajowski11

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.