Investor · South San Francisco, CA

Edwin Madison

Open Edwin in the network graph →

Filings

4

SEC Form D

Connections

21

co-filers

Capital

—

across filings

Active

Dec 2008

to Jul 2025

Most-connected co-filers (21)

Steve Burrill · South San Francisco, CA4 shared Michael A. Vlasic · New York, NY2 shared Steven L. Williamson · New York, NY2 shared Paul W. White · North Andover, MA2 shared Todd Hodnett · Fort Worth, TX2 shared David N. Samuel · Mill Valley, CA2 shared James K. Robertson · North Andover, MA2 shared Lungile Tshuma · San Antonio, TX2 shared Gary Claar · New York, NY2 shared Timothy Brandt · Denver, CO2 shared Moses Ng'Ang'A · Puyallup, WA2 shared Ward W. Woods · Carlsbad, CA2 shared Bernardo Rieber · AVENTURA, FL2 shared J. D. Rogers · Greenwich, CT2 shared William A. Siegenthaler · Wynnewood, PA2 shared Barry Selick · South San Francisco, CA2 shared Erik Wiberg · South San Francisco, CA1 shared Shawn Smith · Fort Worth, TX1 shared Asish Xavier · San Francisco, CA1 shared Todd Lorenz · South San Francisco, CA1 shared Mark Lupa · Boulder, CO1 shared

Recent filings (4)

Knowledgeable AI, Inc.Jul 2025 · 8 co-filers$75K Knowledgeable AI, Inc.Jul 2025 · 8 co-filers$50K CATALYST BIOSCIENCES INCSep 2012 · 14 co-filers$18.6M CATALYST BIOSCIENCES INCDec 2008 · 16 co-filers$40.4M

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