Investor · SAN MATEO, CA

Eric O'Brien

Open Eric in the network graph →

Filings

92

SEC Form D

Connections

262

co-filers

Capital

$678.0M

across filings

Active

Dec 2015

to Nov 2022

Most-connected co-filers (262)

Michael W. Vranos · Old Greenwich, CT26 shared Robert S. Amaral · Las Vegas, NV16 shared Jeffrey A. Weiland · Las Vegas, NV16 shared Clay Mitchell · Santa Clara, CA14 shared SCP Associates GP, LLC · New York, NY10 shared Fall Line Endurance GP LLC · SAN MATEO, CA10 shared Vijay Lathi · San Mateo, CA10 shared Ramin Shirani · Milpitas, CA10 shared Ulf Lindskog · Uppsala, V79 shared Lena Soderstrom · Uppsala, V79 shared Jonathan R. Asmis · San Francisco, CA8 shared L. C. Phillips · Hartwell, GA8 shared ROC Seniors Housing Fund Ii GP, LLC · Salt Lake City, UT8 shared Navun Dussoruth · Ebene, O48 shared Gary Hughes · LIMERICK, Ireland8 shared Joe Lonsdale · San Francisco, CA8 shared Peter Gray · Sydney, Channel Islands8 shared John Beauclair · LARCHMONT, NY7 shared Christian Kenworthy · Lolo, MT7 shared Paul C. Touhey · Malvern, PA7 shared Antony Koblish · Malvern, PA7 shared Adele C. Oliva · Philadelphia, PA7 shared Ken R. Bartizal · San Diego, CA7 shared Patrick Treacy · Parsippany, NJ7 shared

Recent filings (92)

Blue Green Energy, Inc.Jun 2025 · 3 co-filers$2.5M Blue Green Energy, Inc.Jun 2025 · 3 co-filers$1.3M Blue Green Energy, Inc.Apr 2024 · 3 co-filers$1.3M Onkos Surgical, Inc.May 2023 · 17 co-filers$33.5M Fall Line Farms III TrustNov 2022 · 9 co-filers$125K Fall Line Altitude Fund, LPJul 2022 · 7 co-filers$150.0M Fall Line Farms Fund III, LPJul 2022 · 7 co-filers$100.0M Plutoshift, Inc.Jun 2022 · 4 co-filers$5.0M Plutoshift, Inc.Jun 2022 · 4 co-filers$5.0M Plutoshift, Inc.Jun 2022 · 4 co-filers$5.0M Onkos Surgical, Inc.Jun 2022 · 17 co-filers$26.5M Mazen Animal Health Inc.May 2022 · 7 co-filers$12.0M Mazen Animal Health Inc.May 2022 · 7 co-filers$12.0M Onkos Surgical, Inc.Nov 2021 · 17 co-filers$22.5M Fall Line Endurance Fund, LPOct 2021 · 8 co-filers$60.9M Onkos Surgical, Inc.Sep 2021 · 17 co-filers$15.0M Fall Line Farms Fund III, LPJul 2021 · 7 co-filers$100.0M Fall Line Altitude Fund, LPJul 2021 · 7 co-filers$150.0M Onkos Surgical, Inc.Aug 2020 · 17 co-filers$12.0M Greenlight Biosciences Inc.Jun 2020 · 21 co-filers$110.0M Onkos Surgical, Inc.Apr 2020 · 17 co-filers$12.0M Pluto AI, Inc.Sep 2019 · 3 co-filers$8.0M Pluto AI, Inc.Sep 2019 · 3 co-filers$8.0M Onkos Surgical, Inc.Jul 2019 · 11 co-filers$22.6M Fall Line Impossible SPV, LLCMay 2019 · 6 co-filers$13.0M

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