Investor · New York, NY
Martin H. Kaplan
Open Martin in the network graph →Filings
111
SEC Form D
Connections
220
co-filers
Capital
$16.0M
across filings
Active
Jul 2020
to Sep 2025
Most-connected co-filers (220)
Stephen C. Vogt · Chicago, IL88 sharedHoward M. Rossman · Chicago, IL73 sharedThomas D. Macina · Chicago, IL73 sharedEric D. Siegel · Chicago, IL71 sharedMesirow Advanced Strategies, Inc · Chicago, IL69 sharedMesirow Advanced Strategies, Inc · Chicago, IL69 sharedBrian D. Cornell · Chicago, IL62 sharedNick Demare · Vancouver, British Columbia, Canada54 sharedJeffrey C. Friedman · Oakland, CA54 sharedRobert D. Thomas · Chicago, IL52 sharedJanet L. Cunningham · Louisville, KY52 sharedGreg Fedorinchik · Phoenix, AZ52 sharedJohn Weaver · Los Angeles, CA48 sharedCarley Roney · New York, NY48 sharedMaureen Ocampo · Los Angeles, CA44 sharedThomas D. Cunningham · Rowayton, CT38 sharedRichard E. Strauss · Chicago, IL38 sharedMark C. Kulpins · Chicago, IL20 sharedGregory J. Robbins · Chicago, IL19 sharedPaul D. Phipps · Bucks, United Kingdom16 sharedElizabeth L. Aderholdt · Grand Blanc, MI16 sharedEric Peterson · Santa Rosa, CA16 sharedVince Mifsud · Oakville, Ontario, Canada16 sharedRichard Black · Toronto, Ontario, Canada16 shared
Recent filings (111)
Prometheum, Inc.Sep 2025 · 26 co-filers$20.0MPrometheum, Inc.Aug 2025 · 26 co-filers$10.0MPrometheum, Inc.Sep 2024 · 23 co-filers$20.0MPrometheum, Inc.Aug 2024 · 17 co-filers$20.0MPrometheum, Inc.Aug 2024 · 17 co-filers$20.0MOsmosis Resource Efficient Equity Market Neutral US Fund LPJul 2023 · 10 co-filersPrometheum, Inc.Jan 2023 · 29 co-filers$7.5MOsmosis Resource Efficient Equity Market Neutral US Fund LPJul 2022 · 10 co-filersOsmosis Resource Efficient Equity Market Neutral US Fund LPJul 2022 · 10 co-filersPrometheum, Inc.Dec 2021 · 31 co-filers$10.0MOsmosis Resource Efficient Equity Market Neutral US Fund LPJul 2021 · 10 co-filersVALTERRA RESOURCE CORPDec 2020 · 17 co-filers$212KVALTERRA RESOURCE CORPJul 2020 · 26 co-filers$49KOsmosis Resource Efficient Equity Market Neutral US Fund LPJul 2020 · 10 co-filersMESIROW FINANCIAL HOLDINGS INCAug 2014 · 29 co-filers$422KCoincross LLCMar 2014 · 1 co-filer$5.0MCoincross LLCMar 2014 · 1 co-filer$5.0MMesirow Institutional Multi-Strategy Offshore Fund, Ltd.Dec 2013 · 15 co-filersMesirow Institutional Equity Offshore Fund, Ltd.Dec 2013 · 15 co-filersMesirow Credit Strategies Fund, L.P.Oct 2013 · 15 co-filersMesirow Credit Strategies Fund, L.P.Oct 2013 · 15 co-filersMesirow Alternative Strategies Fund II, L.P.Oct 2013 · 15 co-filersMesirow Equity Opportunity Fund III, L.P.Oct 2013 · 15 co-filersMesirow Alternative Strategies Fund Enhanced, LLCSep 2013 · 13 co-filersMESIROW FINANCIAL HOLDINGS INCAug 2013 · 31 co-filers$9.0M
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Martin in the interactive graph →