Investor · San Francisco, CA

Leon Chen

Open Leon in the network graph →

Filings

13

SEC Form D

Connections

88

co-filers

Capital

$256.6M

across filings

Active

Nov 2009

to Aug 2025

Most-connected co-filers (88)

Tiffany Taylor · Austin, TX3 shared Asish Xavier · San Francisco, CA3 shared Mark Melton · Austin, TX2 shared Michael Joyce · La Alameda, CA2 shared Peter Thompson · New York, NY2 shared Peter Moldt · San Carlos, CA2 shared Laine T. Pickrel · Austin, TX2 shared Jeffrey K. Tong · Palo Alto, CA1 shared Kullen T. Kifer · Austin, TX1 shared Michael A. Lynton · New York, NY1 shared Tiffany Taylor Chen · Austin, TX1 shared Richard Kaufman · Greenwood Village, CO1 shared Ron Gershoni · Oakland, CA1 shared David Allen · London, United Kingdom1 shared Josh Green · San Francisco, CA1 shared Lawrence Leisure · CHICAGO, IL1 shared Kristine Eppes · Houston, TX1 shared Scott N. Graves · Los Angeles, CA1 shared Barry G. Lasker · El Cajon, CA1 shared Tom G. Gladney · El Cajon, CA1 shared Jonathan G. Gregory · El Cajon, CA1 shared Donald G. Hosmer · El Cajon, CA1 shared Jesse Yanocha · Los Angeles, CA1 shared Thomas Bacon · Houston, TX1 shared

Recent filings (13)

Plexium, Inc.Aug 2025 · 17 co-filers$60.1M Plexium, Inc.Aug 2025 · 17 co-filers$60.1M Seranova Bio, Inc.Feb 2024 · 9 co-filers$10.0M Seranova Bio, Inc.Feb 2024 · 9 co-filers$10.0M Nurix Therapeutics, Inc.Mar 2020 · 17 co-filers$120.2M Nurix Therapeutics, Inc.Mar 2020 · 17 co-filers$120.2M RFXCEL CORPDec 2017 · 11 co-filers$195K E-scape Bio, Inc.Jun 2017 · 14 co-filers$63.0M E-scape Bio, Inc.Jun 2017 · 14 co-filers$63.0M E-scape Bio, Inc.Aug 2015 · 13 co-filers$55.0M E-scape Bio, Inc.Aug 2015 · 13 co-filers$55.0M TIFFS TREATS HOLDINGS INCJul 2013 · 7 co-filers$2.2M TIFFS TREATS HOLDINGS INCJul 2013 · 7 co-filers$2.2M China Life Sciences Access Fund, L.P.Feb 2013 · 2 co-filers$80.0M China Life Sciences Access Fund, L.P.Feb 2013 · 2 co-filers$80.0M Crescendo Bioscience, Inc.Jan 2013 · 17 co-filers$28.5M Crescendo Bioscience, Inc.Jan 2013 · 17 co-filers$28.5M GENOCEA BIOSCIENCES, INC.Oct 2012 · 23 co-filers$30.5M GENOCEA BIOSCIENCES, INC.Oct 2012 · 23 co-filers$30.5M TIFF'S TREATS ATX 2 LTD.Jul 2012 · 2 co-filers$740K TIFF'S TREATS ATX 2 LTD.Jul 2012 · 2 co-filers$740K Tiff's Treats Houston Ltd.Jul 2011 · 3 co-filers$2.2M Tiff's Treats Houston Ltd.Jul 2011 · 3 co-filers$2.2M TIFFS TREATS HOLDINGS INCNov 2009 · 6 co-filers$1.6M TIFFS TREATS HOLDINGS INCNov 2009 · 6 co-filers$1.6M

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