Investor · New York, NY
Callahan Mark
Open Callahan in the network graph →Active
Feb 2009
to Feb 2026
Most-connected co-filers (12)
Iacovacci Paul · New York, NY6 sharedDouglas Monticciolo · NEW YORK, NY4 sharedMark S. Siegel · LOS ANGELES, CA3 sharedDahlia Loeb · New York, NY3 sharedRobert G. Moses · Naples, FL3 sharedFlynn Sean · Gardenia Court, Camana Bay, Cayman Islands2 sharedMinoru Yoshida · Santa Clara, CA1 sharedLaurence L. Gottlieb · New York, NY1 sharedCharles C. Chambless · Billings, MT1 sharedAubrey L. Prince · Madison, MS1 sharedEdward E. Fernandez · Southlake, TX1 sharedBruce D. Smith · Missoula, MT1 shared Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Callahan in the interactive graph →