Investor · Vista, CA

Jeffrey S. Mason

Open Jeffrey in the network graph →

Filings

10

SEC Form D

Connections

58

co-filers

Capital

$133K

across filings

Active

May 2022

to Jul 2025

Most-connected co-filers (58)

Komathi Stem · Denver, CO6 shared Adam Savitz · Los Altos, CA4 shared Andrew N. Dreyfus · Los Altos, CA4 shared Michael E. Iszygon · Houston, TX4 shared Marc Singer · Seattle, WA4 shared Chris C. Dimitropoulos · Cambridge, MA4 shared Nicholas Smith · Los Altos, CA4 shared Aaron Weaver · Los Altos, CA4 shared Gwill York · Los Altos, CA4 shared Cardona D. Lee · Guaynabo, Puerto Rico4 shared Po Yu (Jeff) Chen · Los Altos, CA4 shared Abbasi N. Dhilawala · Houston, TX4 shared Christopher G. Dupont · Houston, TX4 shared Michael N. Liang · Los Altos, CA4 shared Jesse Hutcher · New York, NY4 shared Christopher N. Cox · Los Altos, CA4 shared Gregory Frankel · Miami, FL4 shared Amit Etkin · Los Altos, CA4 shared Brandon D. Laxton · Prosper, TX4 shared Patrick J. Morris · Chicago, IL2 shared Darien J. Parhad · Chicago, IL2 shared Michael N. Walsh · San Francisco, CA2 shared Michael Veith · Covington, KY2 shared Scott Gerlach · Denver, CO2 shared

Recent filings (10)

Flux Power Holdings, Inc.Jul 2025 · 17 co-filers$5.0M Flux Power Holdings, Inc.Jul 2025 · 17 co-filers$5.0M Alto Neuroscience, Inc.Nov 2023 · 29 co-filers$45.0M Alto Neuroscience, Inc.Nov 2023 · 29 co-filers$59.3M Alto Neuroscience, Inc.Nov 2023 · 29 co-filers$31.9M Alto Neuroscience, Inc.Nov 2023 · 29 co-filers$7.7M Flux Power Holdings, Inc.Nov 2023 · 20 co-filers Flux Power Holdings, Inc.Nov 2023 · 20 co-filers Cure Ventures Fund I, L.P.Apr 2023 · 11 co-filers$350.5M SYN Ventures Fund II-A LPMay 2022 · 7 co-filers$300.0M SYN Ventures Fund II LPMay 2022 · 7 co-filers$300.0M Cure Ventures Fund I, L.P.May 2022 · 11 co-filers$400.0M

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