Investor · Lafayette, CA

Warren A. Heffelfinger

Open Warren in the network graph →

Filings

16

SEC Form D

Connections

54

co-filers

Capital

$2.0M

across filings

Active

May 2020

to Feb 2025

Most-connected co-filers (54)

Warren Keens · Grand Cayman, Cayman Islands8 shared Tiansong Chen · New York, NY8 shared Arne Brock-Utne · Walnut Creek, CA8 shared Kenneth V. Deregt · New York, NY4 shared Gino Santini · Boston, MA4 shared Mark Musco · Walnut Creek, CA4 shared Mark Reynoso · LOS ANGELES, CA4 shared Rami Elghandour · Gaithersburg, MD4 shared David T. Lubner · Gaithersburg, MD4 shared Drew Anwyll · Toronto, Ontario, Canada4 shared Yorick Phoenix · Walnut Creek, CA4 shared Alan E. Walts · Cambridge, MA4 shared Joseph M. Lobacki · Cambridge, MA4 shared Robert M. Armstrong, Ph.D · Cambridge, MA4 shared Edwin Kania · LOS ANGELES, CA4 shared Gopher US RE Opportunity Fund (US) MM 2 LLC · New York, NY3 shared Carlos A. Elizondo Iii · Lafayette, CA3 shared Quentin Yarie · Toronto, Ontario, Canada3 shared Alan Young · Detroit, MI3 shared Damia M. Tormo, Ph.D · Cambridge, MA3 shared Sean Godlewski · La Canada Flintridge, CA2 shared Carol Craig · Merritt Island, FL2 shared Nora Mackenzie · La Canada Flintridge, CA2 shared Dana Kilborne · MERRITT ISLAND, FL2 shared

Recent filings (16)

Gopher US RE Opportunity Fund IV LLCFeb 2025 · 4 co-filers Gopher US RE Opportunity Fund IV LLCFeb 2024 · 4 co-filers Gopher US RE Opportunity Fund III LLCJul 2023 · 4 co-filers Gopher US RE Opportunity Fund II LLCJan 2023 · 4 co-filers Issio Solutions, Inc.Jan 2023 · 9 co-filers$2.0M Issio Solutions, Inc.Jan 2023 · 9 co-filers$2.0M Gopher US RE Opportunity Fund III LLCJul 2022 · 4 co-filers Artax Biopharma, Inc.May 2022 · 20 co-filers$25.8M Gopher US RE Opportunity Fund II LLCFeb 2022 · 4 co-filers Artax Biopharma, Inc.Jan 2022 · 14 co-filers$23.2M Issio Solutions, Inc.Oct 2021 · 17 co-filers$2.0M Issio Solutions, Inc.Apr 2021 · 17 co-filers$1000K Artax Biopharma, Inc.Feb 2021 · 14 co-filers$3.0M Gopher US RE Opportunity Fund II LLCFeb 2021 · 4 co-filers Gopher US RE Opportunity Fund (US) LLCMay 2020 · 4 co-filers Artax Biopharma, Inc.May 2020 · 17 co-filers$2.0M Issio Solutions, Inc.Jan 2014 · 9 co-filers$4.4M

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