Investor · Redwood City, CA

John Mcmahon

Open John in the network graph →

Filings

34

SEC Form D

Connections

132

co-filers

Capital

$1.8B

across filings

Active

Jun 2015

to Nov 2021

Most-connected co-filers (132)

Michael L. Speiser · Palo Alto, CA12 shared Meredith H. Carpenter · Redwood City, CA10 shared Michael Palmer · San Francisco, CA9 shared Brad Gerstner · Boston, MA8 shared Scott Dietzen · San Francisco, CA7 shared Chad Peets · San Francisco, CA7 shared Jason Frantz · San Francisco, CA6 shared Robert Woollen · San Francisco, CA6 shared Max Veneziani · London, United Kingdom5 shared Peter Smyth · Brooklyn, NY5 shared Oliver Benz · Grand Cayman, Cayman Islands5 shared Russell Riggins · York, PA5 shared Glenn Kennedy · Grand Cayman, Cayman Islands5 shared Alexander Hartman · Brooklyn, NY5 shared Steve Tansey · York, PA5 shared Nick J. Gaze · Grand Cayman, Cayman Islands5 shared Kevin Wang · San Francisco, CA4 shared Robert Karnes · New York, NY3 shared Jim Cook · Atlanta, GA3 shared Dan Glunt · Atlanta, GA3 shared Cary M. Marr · Grand Cayman, Cayman Islands3 shared Joe Fuller · Atlanta, GA3 shared Joseph Greving · West Des Moines, IA3 shared Aleksandr Kleynshvag · Newton, NJ3 shared

Recent filings (34)

Local Locker IncAug 2025 · 7 co-filers$6.0M RE Angels LLCAug 2025 · 2 co-filers$949K Sigma Computing, Inc.Jan 2025 · 25 co-filers$274.0M Sigma Computing, Inc.Jan 2025 · 25 co-filers$274.0M CROWN US INVEST LLC (SERIES C)Jun 2024 · 10 co-filers CROWN US INVEST LLC (SERIES B)Jun 2024 · 10 co-filers Sigma Computing, Inc.Jun 2024 · 23 co-filers$255.0M Sigma Computing, Inc.Jun 2024 · 23 co-filers$255.0M Mile Auto, Inc.Dec 2023 · 17 co-filers$20.5M Local Locker IncNov 2023 · 5 co-filers$6.7M Local Locker IncAug 2023 · 5 co-filers Sigma Computing, Inc.May 2023 · 19 co-filers$340.0M Mile Auto, Inc.Oct 2022 · 17 co-filers$4.0M Mile Auto, Inc.Jul 2022 · 17 co-filers$2.1M RE Angels LLCJul 2022 · 2 co-filers$5.0M Local Locker IncFeb 2022 · 5 co-filers$1.5M System 2 Domestic Fund LPFeb 2022 · 11 co-filers Sigma Computing, Inc.Dec 2021 · 19 co-filers$300.0M Magnolia Neurosciences CorpNov 2021 · 17 co-filers$18.4M Ocala Land LLCNov 2021 · 4 co-filers$300K Lacework, Inc.Nov 2021 · 17 co-filers$1.4B Lacework, Inc.Nov 2021 · 17 co-filers$1.4B Sigma Computing, Inc.Sep 2021 · 18 co-filers$15.0M System 2 International Fund LtdJul 2021 · 8 co-filers System 2 Domestic Fund LPMay 2021 · 13 co-filers

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