Investor · Hadley, MA

William Cowen

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Filings

164

SEC Form D

Connections

470

co-filers

Capital

$13.5M

across filings

Active

Jul 2011

to May 2023

Most-connected co-filers (470)

Leonard P. Hedge · Natick, MA62 shared Mark Lesko · East Setauket, NY55 shared Bryce Clark · VANCOUVER, British Columbia, Canada55 shared Sayles P. Braga · Darien, CT55 shared Daniel R. Bleak · VANCOUVER, British Columbia, Canada55 shared Walter J. Gallwas · Chicago, IL55 shared Attain Portfolio Advisors, LLC · Chicago, IL55 shared Bruce Feuchter · Newport Beach, CA55 shared Grant Fitzwilliam · Fort Lauderdale, FL55 shared C. Ashton Newhall · Owings Mills, MD55 shared Jaron Lukasiewicz · NEW YORK, NY55 shared Marshall Swatt · NEW YORK, NY55 shared Connie Norman · VANCOUVER, British Columbia, Canada55 shared Cesar J. Guajardo · VANCOUVER, British Columbia, Canada55 shared Jeffrey D. Malec · Chicago, IL55 shared David M. Mcgovern · HERMOSA BEACH, CA55 shared Michael P. Persky · Darien, CT54 shared Stephen Funk · Watertown, CT54 shared Erik Ostensoe · VANCOUVER, British Columbia, Canada54 shared Claudio Skilnik · Sao Paulo, Guernsey54 shared Eric A. Thompson · Owings Mills, MD54 shared James A. Lim · Owings Mills, MD54 shared George E. Halaby · Chicago, IL54 shared Emil Van Essen · Chicago, IL54 shared

Recent filings (164)

Sware, Inc.Jun 2025 · 19 co-filers$8.0M KeyCare, Inc.Apr 2025 · 14 co-filers$21.8M KeyCare, Inc.Apr 2025 · 14 co-filers$21.8M Sware, Inc.Apr 2024 · 17 co-filers$6.0M Sware, Inc.Nov 2023 · 20 co-filers$3.5M BWM Hedged Growth LPNov 2023 · 5 co-filers$100.0M Convergent Dental, Inc.May 2023 · 16 co-filers Convergent Dental, Inc.May 2023 · 16 co-filers Spheryx, Inc.Apr 2023 · 5 co-filers$2.8M BWM Hedged Growth LPNov 2022 · 5 co-filers$100.0M KeyCare, Inc.Aug 2022 · 10 co-filers$30.0M KeyCare, Inc.Aug 2022 · 10 co-filers$30.0M Convergent Dental, Inc.Jul 2022 · 21 co-filers$50.0M ACTIV Surgical, Inc.Apr 2022 · 19 co-filers$14.6M ACTIV Surgical, Inc.Apr 2022 · 19 co-filers$14.6M ASP (Feeder) SPC II-B2 LPMar 2022 · 31 co-filers ASP (Feeder) SPC II-A2 LPMar 2022 · 31 co-filers ADAMS STREET PRIVATE CREDIT FUND II-B LPMar 2022 · 30 co-filers ADAMS STREET PRIVATE CREDIT FUND II-A LPMar 2022 · 31 co-filers ASP (Feeder) Private Credit Fund II LPMar 2022 · 30 co-filers Boston Technology Research CorpMar 2022 · 16 co-filers$15.3M ASP Partners Private Credit Fund II LPMar 2022 · 29 co-filers ASP (Feeder) SPC II-A1 LPMar 2022 · 31 co-filers ASP (Feeder) SPC II-B1 LPMar 2022 · 28 co-filers Boston Technology Research CorpJan 2022 · 14 co-filers$1.0M

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