People · Operator

Marc S. Keller

Named in public records as an officer, director or promoter · active 2025–2025 · Pharmaceuticals

1
Companies
1
Filings
$31.6M
Combined raised · real
Single
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Cristcot LLCPharmaceuticalsSeries A$31.6M$37.4M2025
Operator network

Marc S. Keller 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.

Ernest H. Pomerantz · 4 companies · 1 sharedErnest H. Pomeran…David S. Shepherd · 2 companies · 1 sharedDavid S. ShepherdJohn S. Davagian II · 2 companies · 1 sharedJohn S. Davagian …Mark C. Ensign · 2 companies · 1 sharedMark C. EnsignDavid H. Shepard · 1 companies · 1 sharedDavid H. ShepardDavid H. Shepherd · 1 companies · 1 sharedDavid H. ShepherdHenry H. Kay · 1 companies · 1 sharedHenry H. KayHenry J. Kay · 1 companies · 1 sharedHenry J. KayJames C. Bartlett · 1 companies · 1 sharedJames C. BartlettJames H. Bartlett · 1 companies · 1 sharedJames H. BartlettJennifer J. Davagian · 1 companies · 1 sharedJennifer J. Davag…John H. Davagian · 1 companies · 1 sharedJohn H. DavagianJohn S. Davagian · 1 companies · 1 sharedJohn S. DavagianRichard H. Warburg · 1 companies · 1 sharedRichard H. WarburgRichard S. Warburg · 1 companies · 1 sharedRichard S. WarburgCristcot LLC · $31.6M raisedCristcot LLCMarc S. KellerMK
Marc S. Keller Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Ernest H. Pomerantz14
John S. Davagian II12
Mark C. Ensign12
David S. Shepherd12
David H. Shepherd11
John S. Davagian11
James H. Bartlett11
John H. Davagian11
David H. Shepard11
Henry H. Kay11
James C. Bartlett11
Richard S. Warburg11
Richard H. Warburg11
Henry J. Kay11
Jennifer J. Davagian11

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.