Investor · CHARLESTON, SC

James C. O'Brien

Open James in the network graph →

Filings

17

SEC Form D

Connections

93

co-filers

Capital

$1.4B

across filings

Active

Jan 2022

to May 2023

Most-connected co-filers (93)

Wesley H. Fuller · Charleston, SC8 shared Michael Hoag · Hamilton, Bermuda7 shared Short Cliffs Capital LLC · Short Hills, NJ7 shared Kendall Johnson · New York, NY5 shared Alex Felix · New York, NY5 shared Seth Ginns · New York, NY5 shared David Pakman · Vancouver, British Columbia, Canada5 shared Zhendong Qin · Short Hills, NJ5 shared Yakov Brukhman · New York, NY5 shared Christopher Perkins · New York, NY5 shared Coinfund Seed V Gp Llc · NEW YORK, NY4 shared Coinfund Seed V Gp Llc · NEW YORK, NY4 shared Alexander S. Dimitrief · Edison, NJ4 shared Coinfund Seed V Gp Llc · NEW YORK, NY4 shared William C. Maddux · Charleston, SC2 shared Gabriel S. Hidalgo · Dallas, TX2 shared Tom F. Kolinski · BOSTON, MA2 shared Tina S. Hou · Dallas, TX2 shared Peter Fernquist · New York, NY2 shared Peter M. Algert · San Francisco, CA2 shared Othman Ouenes · Santa Fe, NM2 shared Ii LLC Mighty Capital GP · SAN FRANCISCO, CA2 shared Philip Eytan · New York, NY2 shared James S. Crigler · Dallas, TX2 shared

Recent filings (17)

Greystar Equity Partners XII (892), LPDec 2025 · 10 co-filers Greystar Equity Partners XII (892), LPDec 2025 · 10 co-filers Greystar Equity Partners XII, LPDec 2025 · 10 co-filers Greystar Equity Partners XII, LPDec 2025 · 10 co-filers CF Series DAT A LPSep 2025 · 18 co-filers$13.4M CoinFund Seed V Onshore LPJul 2025 · 17 co-filers$165.0M CoinFund Seed V Offshore LPJul 2025 · 17 co-filers$165.0M CoinFund Seed V-A LPJul 2025 · 17 co-filers$165.0M CoinFund Seed V-B LPJul 2025 · 17 co-filers$165.0M TheraTec, Inc.Sep 2023 · 16 co-filers$1.0M Buzzkill Labs, Inc.Jul 2023 · 11 co-filers$2.0M Greystar Equity Partners XI, L.P.May 2023 · 20 co-filers$3.0B Greystar Equity Partners XI (892), L.P.May 2023 · 20 co-filers$3.0B TheraTec, Inc.Apr 2023 · 18 co-filers$250K Buzzkill Labs, Inc.Apr 2023 · 11 co-filers$4.4M 4JM Corp.Jul 2022 · 14 co-filers$3.0M 4JM Corp.Mar 2022 · 16 co-filers$3.0M Design Barn Inc.Mar 2022 · 11 co-filers$37.0M Design Barn Inc.Jan 2022 · 11 co-filers$36.1M

Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See James in the interactive graph →