Investor · San Francisco, CA

Craig Weissman

Open Craig in the network graph →

Filings

9

SEC Form D

Connections

32

co-filers

Capital

$30.1M

across filings

Active

Jun 2011

to Feb 2026

Most-connected co-filers (32)

Leland Pillsbury · San Francisco, CA5 shared Brad Gerstner · Boston, MA4 shared Brian O'Malley · San Francisco, CA4 shared Patrick Bosworth · San Francisco, CA4 shared Marco Benvenuti · San Francisco, CA3 shared Chad Robins · Kirkland, WA2 shared Willy Ballmann · Singapore, U02 shared J. K. Kenny · New York, NY2 shared Harlan Robins · Seattle, WA2 shared Chris Carlson · Eugene, OR2 shared Thomas E. Mccabe · Tulsa, OK2 shared Eugene C. Hicks, Iv · Charlotte, NC2 shared R. S. Tobin · Blowing Rock, NC2 shared Ibrahim Ash · Plaistow, MA2 shared Hilary Brown · Lawrence, KS2 shared David R. Campbell · Benicia, CA2 shared Erik A. Lind · Hamilton, Bermuda2 shared Einar M. Steimler · Hamilton, Bermuda2 shared Rolf A. Wikborg · Hamilton, Bermuda2 shared Andy Zoltners · Seattle, WA2 shared Anne Mcintosh · Davidson, NC2 shared Benjamin C. Gage · Raleigh, NC2 shared John C. Thomas, Jr · Cardiff-by-the-Sea, CA1 shared David Tabors · San Francisco, CA1 shared

Recent filings (9)

Quoruum, Inc.Feb 2026 · 1 co-filer$1K Duetto Research, Inc.Dec 2015 · 15 co-filers$30.1M Duetto Research, Inc.Dec 2015 · 15 co-filers$30.1M Duetto Research, Inc.Jul 2014 · 11 co-filers$16.0M Duetto Research, Inc.May 2013 · 11 co-filers$10.3M SAFE N CLEAR, INC.Mar 2013 · 9 co-filers$350K SAFE N CLEAR, INC.Feb 2013 · 9 co-filers$350K Duetto Research, Inc.Jan 2013 · 8 co-filers$10.0M Duetto Research, Inc.Jan 2013 · 8 co-filers$10.0M Adaptive Biotechnologies CorpJun 2012 · 12 co-filers$5.0M Adaptive Biotechnologies CorpJun 2012 · 12 co-filers$5.0M Adaptive TCR CorpJun 2011 · 8 co-filers$7.5M Adaptive TCR CorpJun 2011 · 8 co-filers$7.5M

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