Investor · Cambridge, MA

David C. Feinberg

Open David in the network graph →

Filings

7

SEC Form D

Connections

41

co-filers

Capital

$6.4M

across filings

Active

Jul 2021

to Sep 2025

Most-connected co-filers (41)

Roger Rupp · BOCA RATON, FL4 shared James Shepard · BOCA RATON, FL4 shared Robert C. Green · Cambridge, MA3 shared Neil C. Mckinnon · San Francisco, CA3 shared Darren Hicks · Omaha, NE3 shared Kirk Hanson · Omaha, NE3 shared Jennifer Murphy · ANNAPOLIS, MD3 shared Sean J. Knoppe · Columbus, OH2 shared Brian J. Knoppe · Columbus, OH2 shared Christopher J. Knoppe · Columbus, OH2 shared Jon-Ryan Riggins · Santa Monica, CA2 shared Shane J. Leonard · UNIONDALE, NY2 shared Robert Davies · Cedar Rapids, IA2 shared Blaine Shaffer · Cedar Rapids, IA2 shared Scott Cote · Cedar Rapids, IA2 shared Patrick K. Regan · Minnetonka, MN2 shared Andrew K. Ohman · Minnetonka, MN2 shared Nicholas R. Vorhoff · New York, NY2 shared Russell L. Appel · New York, NY2 shared Mauricio S. Villar · Grand Cayman, Cayman Islands2 shared Bryan M. St. George · Austin, TX2 shared Arvin Vohra · SAN FRANCISCO, CA2 shared Godfrey A. Abel · LUXEMBOURG, Luxembourg2 shared Max Pounonav · Wyckoff, MA2 shared

Recent filings (7)

Nurture Genomics, Inc.Sep 2025 · 7 co-filers$6.0M Nurture Genomics, Inc.Aug 2023 · 8 co-filers$5.0M CBUS Opportunity Zone Fund III LLCJul 2023 · 8 co-filers$50.0M Nurture Genomics, Inc.Oct 2022 · 8 co-filers$3.0M Keystone Bancshares, Inc. /TXSep 2022 · 26 co-filers$18.0M Keystone Bancshares, Inc. /TXJul 2021 · 26 co-filers$24.0M CBUS Opportunity Zone Fund III LLCJul 2021 · 8 co-filers$50.0M

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