People · Operator

Daniel J. Geffken

Named in public records as an officer, director or promoter · active 2017–2023 · Biotechnology

3
Companies
4
Filings
$223.1M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Graybug Vision, Inc.BiotechnologySeries C$144.8M$132.4M2023
CalciMedica Subsidiary, Inc.BiotechnologySeries B$73.0M$127.9M2023
Opsonix, Inc.BiotechnologySeed$5.3M$55.5M2017
Operator network

Daniel J. Geffken 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.

Cameron Wheeler · 9 companies · 1 sharedCameron WheelerChau Khuong · 9 companies · 1 sharedChau KhuongChristy Shaffer · 6 companies · 1 sharedChristy ShafferEmmett Cunningham · 4 companies · 1 sharedEmmett CunninghamGerald Cagle · 4 companies · 1 sharedGerald CagleJeffrey Cleland · 4 companies · 1 sharedJeffrey ClelandChristy L. Shaffer · 3 companies · 1 sharedChristy L. ShafferJeffrey L. Cleland · 3 companies · 1 sharedJeffrey L. ClelandJUSTIN HANES · 3 companies · 1 sharedJUSTIN HANESMICHAEL O'ROURKE · 3 companies · 1 sharedMICHAEL O'ROURKEEric W. Roberts · 4 companies · 2 sharedEric W. RobertsMichael J. Dunn · 3 companies · 2 sharedMichael J. DunnA. Rachel Leheny · 2 companies · 2 sharedA. Rachel LehenyKenneth A. Stauderman · 2 companies · 2 sharedKenneth A. Staude…Sudarshan J. Hebbar · 2 companies · 2 sharedSudarshan J. Hebb…Brian Gallagher · 11 companies · 1 sharedBrian GallagherMichael Dunn · 5 companies · 1 sharedMichael DunnRobert G. McNeil · 5 companies · 1 sharedRobert G. McNeilVikas Goyal · 5 companies · 1 sharedVikas GoyalJohn McDonald · 4 companies · 1 sharedJohn McDonaldPeter C.M. McWilliams · 3 companies · 1 sharedPeter C.M. McWill…Brian J. G. Pereira · 2 companies · 1 sharedBrian J. G. Perei…Graybug Vision, Inc. · $144.8M raisedGraybug Vision, Inc.CalciMedica Subsidiary, Inc. · $73.0M raisedCalciMedica Subsidiar…Opsonix, Inc. · $5.3M raisedOpsonix, Inc.Daniel J. GeffkenDG
Daniel J. Geffken Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Eric W. Roberts24
Michael J. Dunn23
A. Rachel Leheny22
Kenneth A. Stauderman22
Sudarshan J. Hebbar22
Brian Gallagher111
Chau Khuong19
Cameron Wheeler19
Christy Shaffer16
Michael Dunn15
Vikas Goyal15
Robert G. McNeil15
Emmett Cunningham14
John McDonald14
Gerald Cagle14
Jeffrey Cleland14
MICHAEL O'ROURKE13
JUSTIN HANES13
Jeffrey L. Cleland13
Peter C.M. McWilliams13

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.