Investor · Boston, MA
Stephen Parthum
Open Stephen in the network graph →Filings
68
SEC Form D
Connections
121
co-filers
Capital
$125K
across filings
Active
Sep 2018
to Sep 2025
Most-connected co-filers (121)
John C. Wilkins, Jr · New York, NY43 sharedGSA Capital Partners LLP · London, United Kingdom28 sharedDarcy S. Howe · Kansas City, MO22 sharedJamie E. Toothman · New York, NY20 sharedJames G. Webb · George Town, Grand Cayman, Cayman Islands18 sharedChris Nichols · Boston, MA17 sharedFrank Apeseche · Waltham, MA17 sharedShereen Jones · Boston, MA17 sharedDavid Olney · Boston, MA17 sharedEric Draeger · Boston, MA17 sharedHenning M. Bruder · Grand Cayman, Cayman Islands16 sharedDavid Derosa · Harrison, NY16 sharedDavid Quade · Boston, MA15 sharedGeorge Krupp · Boston, MA15 sharedGSA Capital General Partner Limited · George Town, Grand Cayman, Cayman Islands14 sharedPaul Sevieri · Boston, MA11 sharedStefanie M. Warzecha · Kansas City, MO10 sharedJordan P. Warzecha · Kansas City, MO10 sharedMichael Wood · San Francisco, CA10 sharedClaire Umanzio · Boston, MA9 sharedMary B. Bloom · Boston, MA9 sharedIra D. Kleinman · New York, NY8 sharedThomas W. Arenz · New York, NY8 sharedMichael B. Deflorio · New York, NY8 shared
Recent filings (68)
GSA QMS FUND LPSep 2025 · 5 co-filersGSA INTERNATIONAL FUND LTDSep 2025 · 11 co-filersGSA INTERNATIONAL FUND LPSep 2025 · 5 co-filersGSA QMS Fund LtdSep 2025 · 11 co-filersGSA INTERNATIONAL FUND LPSep 2024 · 5 co-filersGSA INTERNATIONAL FUND LTDSep 2024 · 11 co-filersGSA QMS FUND LPSep 2024 · 5 co-filersGSA QMS Fund LtdSep 2024 · 11 co-filersGSA QMS FUND LPSep 2023 · 5 co-filersGSA INTERNATIONAL FUND LPSep 2023 · 5 co-filersGSA INTERNATIONAL FUND LTDSep 2023 · 10 co-filersGSA QMS Fund LtdSep 2023 · 11 co-filersGSA INTERNATIONAL FUND LPSep 2022 · 5 co-filersGSA QMS FUND LPSep 2022 · 5 co-filersGSA INTERNATIONAL FUND LTDSep 2022 · 10 co-filersGSA QMS Fund LtdSep 2022 · 11 co-filersBVF-V Journey Co-Investment, LPAug 2022 · 2 co-filersGSA Trend Fund Ltd.Sep 2021 · 11 co-filersGSA QMS Fund LtdSep 2021 · 11 co-filersGSA Trend Fund LPSep 2021 · 5 co-filersGSA INTERNATIONAL FUND LPSep 2021 · 5 co-filersGSA INTERNATIONAL FUND LTDSep 2021 · 10 co-filersGSA QMS FUND LPSep 2021 · 5 co-filersBMPP 7900 Wisconsin REIT, Inc.Aug 2021 · 2 co-filers$125KCerrado Gold Inc.Mar 2021 · 28 co-filers$4.0M
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Stephen in the interactive graph →