Investor · New York, NY
Mark S. Black
Open Mark in the network graph →Filings
26
SEC Form D
Connections
76
co-filers
Capital
$606.9M
across filings
Active
Mar 2015
to Jan 2026
Most-connected co-filers (76)
Adam W. Rockfeld · New York, NY18 sharedTodd Belveal · TAMPA, FL13 sharedCharles C. Mautz · Portland, OR10 sharedPeter C. Nickerson · Portland, OR10 sharedGreg J. Lea · Rochester, MN9 sharedBrian W. Pickering · Rochester, MN9 sharedAllen J. Berning · Rochester, MN9 sharedKristi C. Lord · Portland, OR9 sharedSusan Johnson · Eden Prairie, MN6 sharedCharles Esserman · SAN FRANCISCO, CA6 sharedSebastian Mejia · San Francisco, CA6 sharedWally B. Wertsch · San Francisco, CA6 sharedMichael T. Moe · Woodside, CA6 sharedRaveneur Investment Group Lp · New York, NY6 sharedRaveneur Investment Group Lp · New York, NY6 sharedEmily-May W. Richards · Atlanta, GA6 sharedRobert M. Greenglass · Cambridge, MA5 sharedLeila Biederman · New York, NY4 sharedNayan G. Parekh · Washington, DC, Washington, D.C.4 sharedStephen N. Cunningham · Washington, DC, Washington, D.C.4 sharedMichael E. Murphy · Ann Arbor, MI4 sharedVikram M. Sudarsan · Washington, DC, Washington, D.C.4 sharedTammy D. Jennissen · Grand Cayman, Cayman Islands4 sharedCharles L. Thomas · Grand Cayman, Cayman Islands4 shared
Recent filings (26)
Ambient Clinical Analytics, Inc.Jan 2026 · 3 co-filers$2.7MCoherence Long/Short Credit Fund, Ltd.Nov 2025 · 4 co-filersCoherence Long/Short Credit Fund, Ltd.Nov 2024 · 6 co-filersAmbient Clinical Analytics, Inc.Apr 2024 · 8 co-filers$5.0MAmbient Clinical Analytics, Inc.Jan 2021 · 15 co-filers$800KAmbient Clinical Analytics, Inc.Apr 2020 · 14 co-filers$750KAmbient Clinical Analytics, Inc.Jun 2019 · 13 co-filers$1.2MAmbient Clinical Analytics, Inc.Jul 2018 · 9 co-filers$300KAmbient Clinical Analytics, Inc.May 2018 · 14 co-filers$1.5MEven Financial, Inc.Feb 2017 · 10 co-filers$6.1MAmbient Clinical Analytics, Inc.Feb 2017 · 11 co-filers$5.4MRaveneur Offshore Fund LtdAug 2016 · 13 co-filersRaveneur Master Fund LtdJul 2016 · 13 co-filersRaveneur Fund LPJun 2016 · 10 co-filersAmbient Clinical Analytics, Inc.Feb 2016 · 8 co-filers$1.5MAmbient Clinical Analytics, Inc.Aug 2015 · 8 co-filers$700KRaveneur Offshore Fund LtdAug 2015 · 13 co-filersRaveneur Master Fund LtdJul 2015 · 13 co-filersRaveneur Fund LPJun 2015 · 10 co-filersAmbient Clinical Analytics, Inc.Mar 2015 · 8 co-filers$500KEven Financial, Inc.Mar 2015 · 10 co-filers$2.8MREDTAIL SOLUTIONS, INC.Dec 2012 · 8 co-filers$350KREDTAIL SOLUTIONS INCAug 2010 · 7 co-filers$595KButtonwood Group, LLCNov 2009 · 13 co-filers$4KWilliamson Trail Resources, LPNov 2009 · 14 co-filers$20K
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Mark in the interactive graph →