People · Operator

DAVID J STIER

Named in public records as an officer, director or promoter · Telecommunications

2
Companies
2
Filings
$5.5M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Spot Mobile International Ltd.TelecommunicationsSeries A$5.0M$12.1M
Blackbird CorpTelecommunicationsPre-Seed$500K$808K
Operator network

DAVID J STIER 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.

JEFFREY J KAPNER · 1 companies · 1 sharedJEFFREY J KAPNERCHARLES J ZWEBNER · 2 companies · 2 sharedCHARLES J ZWEBNERVALERIE J FERRARO · 2 companies · 2 sharedVALERIE J FERRAROJOSE J CADI · 1 companies · 1 sharedJOSE J CADISpot Mobile International Ltd. · $5.0M raisedSpot Mobile Internati…Blackbird Corp · $0.5M raisedBlackbird CorpDAVID J STIERDS
DAVID J STIER Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
VALERIE J FERRARO22
CHARLES J ZWEBNER22
JEFFREY J KAPNER11
JOSE J CADI11

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.