Investor · ATHERTON, CA

Brian Barlow

Open Brian in the network graph →

Filings

23

SEC Form D

Connections

100

co-filers

Capital

$126.2M

across filings

Active

Apr 2012

to Dec 2025

Most-connected co-filers (100)

Olivia Steedman · Toronto, Ontario, Canada6 shared Adam Barker · Mountain View, CA6 shared Harold R. Eason · Winston-Salem, NC5 shared Jay Bockhaus · WESTPORT, CT5 shared Frazer Morgan · Medfield, MA5 shared Jamil Beg · Medfield, MA5 shared Amy J. Satav · Montreal, Quebec, Canada5 shared Andrew Michaelides · Sevenoaks, United Kingdom5 shared Robert Kreamer · Louisville, CO4 shared Jonathan Winer · White Plains, NY4 shared Shaun Maguire · San Francisco, CA4 shared Matanya Horowitz · Louisville, CO4 shared Gregory A. Reid · Houston, TX3 shared Kendra D. Vandermeulen · KIRKLAND, WA3 shared Frank Aldag · Huntsville, AL3 shared Daniel Doctoroff · New York, NY3 shared Steven Cost · Huntsville, AL3 shared J. Travis Pritchett · Birmingham, AL3 shared Raymond J. Harbert, Jr · Birmingham, AL3 shared Dale Burgess · Toronto, Ontario, Canada3 shared John W. Mccullough · Birmingham, AL3 shared Tom Caltagirone · Houston, TX3 shared Gobind Sahney · London, United Kingdom3 shared Eric Koslow · San Francisco, CA3 shared

Recent filings (23)

SIP MANAGEMENTCO, LLCDec 2025 · 1 co-filer SIP MANAGEMENTCO, LLCDec 2025 · 1 co-filer SIDEWALK INFRASTRUCTURE PARTNERS, LLCNov 2025 · 17 co-filers SIDEWALK INFRASTRUCTURE PARTNERS, LLCNov 2025 · 17 co-filers Harbert Justice Co-Investor, LPOct 2025 · 13 co-filers Harbert Power Fund VII, LPOct 2025 · 13 co-filers SIDEWALK INFRASTRUCTURE PARTNERS, LLCMay 2025 · 17 co-filers TDC Opportunity Fund IV, L.P.Oct 2023 · 23 co-filers AMP Robotics CorpAug 2023 · 12 co-filers$104.2M AMP Robotics CorpNov 2022 · 11 co-filers$100.0M TDC Opportunity Fund IV, L.P.Oct 2022 · 23 co-filers AMP Robotics CorpJul 2022 · 13 co-filers$80.0M AMP Robotics CorpJul 2022 · 13 co-filers$80.0M SIDEWALK INFRASTRUCTURE PARTNERS, LLCJan 2022 · 17 co-filers Black Swan Pharmaceuticals, Inc.Sep 2021 · 13 co-filers$3.0M SIDEWALK INFRASTRUCTURE PARTNERS, LLCSep 2021 · 17 co-filers$190.0M TDC Opportunity Fund III, L.P.Jul 2021 · 15 co-filers$150.0M Harbert Generate Holdings, LPJul 2021 · 11 co-filers AMP Robotics CorpDec 2020 · 9 co-filers$55.0M AMP Robotics CorpDec 2020 · 9 co-filers$55.0M Black Swan Pharmaceuticals, Inc.Apr 2020 · 13 co-filers$600K Capital Parallel Fund III-A, L.P.Apr 2020 · 2 co-filers$6.0M SIDEWALK INFRASTRUCTURE PARTNERS, LLCSep 2019 · 8 co-filers$400.0M SIDEWALK INFRASTRUCTURE PARTNERS, LLCSep 2019 · 8 co-filers$400.0M A. Capital Partners III, L.P.Aug 2019 · 1 co-filer$140.0M

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