Ledger.
Investor · Tiburon, CA

Leonard S. Yaffe

Open Leonard in the network graph →
Filings
14
SEC Form D
Connections
29
co-filers
Capital
$39.7M
across filings
Active
Oct 2019
to Nov 2025

Most-connected co-filers (29)

Partner of the Issuer Kessef Capital Management LLC · San Francisco, CA11 sharedDavid Altman · Lake Oswego, OR4 sharedRyan S. Alexander · Los Angeles, CA4 sharedLen S. Moscati · Stamford, CT4 sharedPaul Leblanc · Stamford, CT4 sharedScott M. Foster · Murrietta, CA4 sharedCalvin R. Watson · Vancouver, British Columbia, Canada4 sharedJeffrey C. Smedsrud · Eden Prairie, MN3 sharedKessef Capital Management LLC · Tiburon, CA3 sharedMichael Hudson · Vancouver, British Columbia, Canada3 sharedMariana Bermudez · Vancouver, British Columbia, Canada3 sharedJeffrey C. Boyd · Stamford, CT3 sharedHugh B. Sanderford, Jr · Metairie, LA2 sharedJoel Ackerman · Hackensack, NJ2 sharedJose Vargas · Miami, FL2 sharedScott D. Tobin · Hackensack, NJ2 sharedAbba D. Poliakoff · Hackensack, NJ2 sharedDavid D. Miller · Hackensack, NJ2 sharedArthur D. Epker, Iii · Hackensack, NJ2 sharedRonnie Morris · Hackensack, NJ2 sharedDaniel D. Mendelson · Hackensack, NJ2 sharedRichard C. Spencer · Wilson, WY2 sharedSteven Bay · Pleasanton, CA2 sharedAna I. Stancic · Baltimore, MD1 shared

Recent filings (14)

STOC DOC PARTNERS LPNov 2025 · 2 co-filersSTOC DOC PARTNERS LPOct 2024 · 3 co-filersSTOC DOC PARTNERS LPOct 2023 · 2 co-filersSTOC DOC PARTNERS LPOct 2022 · 3 co-filersSTOC DOC PARTNERS LPOct 2021 · 3 co-filersSTOC DOC PARTNERS LPOct 2020 · 3 co-filersSTOC DOC PARTNERS LPOct 2019 · 3 co-filersSTOC DOC PARTNERS LPOct 2018 · 5 co-filersSTOC DOC PARTNERS LPOct 2017 · 5 co-filersSTOC DOC PARTNERS LPOct 2016 · 5 co-filersCHAMPIONS ONCOLOGY, INC.Mar 2015 · 19 co-filers$14.0MCHAMPIONS ONCOLOGY, INC.Dec 2014 · 16 co-filers$2.0MSTOC DOC PARTNERS LPOct 2014 · 5 co-filersCHAMPIONS ONCOLOGY, INC.Feb 2013 · 10 co-filers$9.3M

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