Investor · San Diego, CA
Tony O'Brien
Open Tony in the network graph →Filings
35
SEC Form D
Connections
112
co-filers
Capital
$5.6M
across filings
Active
May 2022
to Nov 2025
Most-connected co-filers (112)
Saundra Pelletier · San Diego, CA19 sharedMatthew Perlman · New York, NY14 sharedMichael Dale · West Newton, MA14 sharedArthur T. Minson · New York, NY14 sharedColin Rutherford · San Diego, CA13 sharedLisa Rarick · San Diego, CA13 sharedAmy M. Stone · ST. LOUIS, MO12 sharedLouis P. Stone, Iv · ST. LOUIS, MO12 sharedIvy Zhang · San Diego, CA11 sharedChetachi Ozougwu · HOUSTON, TX10 sharedAdrayll Askew · HOUSTON, TX10 sharedNdukwe Kalu · HOUSTON, TX10 sharedBrian Buenneke · San Francisco, CA10 sharedKim Kamdar · San Diego, CA9 sharedDouglas Fambrough · Boston, MA6 sharedGillian Greer · San Diego, CA6 sharedFourthstone Gp Llc · ST. LOUIS, MO6 sharedWolfgang M. Hafenmayer · Singapore, U05 sharedErnesto I. Hanhausen · Singapore, U05 sharedFourthstone Gp Llc · ST. LOUIS, MO5 sharedGian Fulgoni · WINSTON-SALEM, NC5 sharedEric Elert · Winston-Salem, NC5 sharedDennis Lau · SUFFIELD, CT5 sharedRegula M. Schegg · Singapore, U05 shared
Recent filings (35)
X-Bow Launch Systems Inc.Nov 2025 · 20 co-filers$50.0MEvofem Biosciences, Inc.Jul 2025 · 17 co-filers$925KEvofem Biosciences, Inc.Jul 2025 · 17 co-filers$925KEvofem Biosciences, Inc.Apr 2025 · 17 co-filers$1.5MEvofem Biosciences, Inc.Apr 2025 · 17 co-filers$1.5MX-Bow Launch Systems Inc.Jan 2025 · 20 co-filers$50.0MEvofem Biosciences, Inc.Aug 2024 · 17 co-filers$500KEvofem Biosciences, Inc.Aug 2024 · 17 co-filers$500KEvofem Biosciences, Inc.Aug 2024 · 17 co-filers$500KEvofem Biosciences, Inc.Aug 2024 · 17 co-filers$500KX-Bow Launch Systems Inc.May 2024 · 23 co-filers$89.2MElectric Hydrogen Co.Oct 2023 · 32 co-filers$411.0MElectric Hydrogen Co.Oct 2023 · 32 co-filers$23.9MElectric Hydrogen Co.Oct 2023 · 32 co-filers$139.3MElectric Hydrogen Co.Oct 2023 · 32 co-filers$750KEvofem Biosciences, Inc.Oct 2023 · 17 co-filers$2.9MEvofem Biosciences, Inc.Oct 2023 · 17 co-filers$2.9MSalarius Pharmaceuticals, Inc.May 2023 · 21 co-filers$6.0MSalarius Pharmaceuticals, Inc.May 2022 · 21 co-filers$2.3MX-Bow Launch Systems Inc.May 2022 · 23 co-filers$15.0MFourthstone QP Opportunity Fund LPJul 2021 · 8 co-filersFourthstone Small-Cap Financials Fund LPJul 2021 · 7 co-filersFourthstone Opportunity Fund LPJul 2021 · 7 co-filersEvofem Biosciences, Inc.Oct 2020 · 31 co-filers$25.0MFourthstone QP Opportunity Fund LPJul 2020 · 8 co-filers
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Tony in the interactive graph →