People · Operator

Roger O'Brien

Named in public records as an officer, director or promoter · active 2012–2018 · Other Technology, Other

2
Companies
6
Filings
$11.0M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Document Security Systems IncOther TechnologySeed$8.9M$93.7M2012
Catalina Sea Ranch, LLCOtherPre-Seed$2.1M$12.7M2012
Operator network

Roger O'Brien 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.

David Klein · 10 companies · 1 sharedDavid KleinJohn Cronin · 8 companies · 1 sharedJohn CroninPhilip Jones · 5 companies · 1 sharedPhilip JonesIra Greenstein · 3 companies · 1 sharedIra GreensteinPatrick White · 3 companies · 1 sharedPatrick WhiteIra A. Greenstein · 2 companies · 1 sharedIra A. GreensteinRobert Fagenson · 2 companies · 1 sharedRobert FagensonAlan A Harrison · 1 companies · 1 sharedAlan A HarrisonAlan E. Harrison · 1 companies · 1 sharedAlan E. HarrisonAlan Harrison · 1 companies · 1 sharedAlan HarrisonDavid B. Wicker · 1 companies · 1 sharedDavid B. WickerDavid Wicker · 1 companies · 1 sharedDavid WickerPatrick B White · 1 companies · 1 sharedPatrick B WhitePatrick E. White · 1 companies · 1 sharedPatrick E. WhiteRobert B. Bzdick · 1 companies · 1 sharedRobert B. BzdickRobert B. Fagenson · 1 companies · 1 sharedRobert B. FagensonDeborah Johnson · 3 companies · 1 sharedDeborah JohnsonCharlotte Ginsburg · 1 companies · 1 sharedCharlotte GinsburgJOHN EGER · 1 companies · 1 sharedJOHN EGERJohn Molina · 1 companies · 1 sharedJohn MolinaPhil Cruver · 1 companies · 1 sharedPhil CruverPhilip Cruver · 1 companies · 1 sharedPhilip CruverDocument Security Systems Inc · $8.9M raisedDocument Security Sys…Catalina Sea Ranch, LLC · $2.1M raisedCatalina Sea Ranch, L…Roger O'BrienRO
Roger O'Brien Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
David Klein110
John Cronin18
Philip Jones15
Patrick White13
Deborah Johnson13
Ira Greenstein13
Ira A. Greenstein12
Robert Fagenson12
Robert B. Bzdick11
Tomothy B. Ashman11
Patrick E. White11
Phil Cruver11
JOHN EGER11
John Molina11
Philip Cruver11
Charlotte Ginsburg11
Alan A Harrison11
Patrick B White11
Timothy B Ashman11
David Wicker11

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.