Investor · Cambridge, MA
David M. Neafus
Open David in the network graph →Filings
48
SEC Form D
Connections
156
co-filers
Capital
$147.5M
across filings
Active
Jul 2016
to Dec 2025
Most-connected co-filers (156)
Bradley J. Carver · Cambridge, MA15 sharedJames M. Shanahan · Cambridge, MA15 sharedEric M. Tooker · Scottsdale, AZ12 sharedCharlie M. Flynn · Cambridge, MA11 sharedMichael M. Clifford · Cambridge, MA8 sharedJonathan Jacoby · New York, NY7 sharedJiagang Zhao · Medfield, MA7 sharedPhilip Karp · Rockingham, VA7 sharedReza Dana · Medfield, MA6 sharedJason Werner · Medfield, MA6 sharedRick Farnell · Boise, ID5 sharedMike Tobin · New York, NY5 sharedJean-Bastien Auger · New York, NY5 sharedBrad Osborne · Brentwood, TN5 sharedNick Efstratis · San Francisco, CA5 sharedTroy Mcbride · West Lebanon, NH5 sharedTerry Mcguire · West Lebanon, NH5 sharedRobert J. Short · Polson, MT5 sharedChris Popp · New York, NY5 sharedGeorge Mulhern · Boise, ID5 sharedBenjamin Bollinger · West Lebanon, NH5 sharedLiam O. Ratcliffe · New York, NY4 sharedJesse I. Treu · Lexington, MA4 sharedMichael N. Balmuth · Boston, MA4 shared
Recent filings (48)
SYNDEVRX INCDec 2025 · 7 co-filers$20.0MSYNDEVRX INCNov 2025 · 7 co-filers$12.0MSightStream Biotherapeutics, Inc.Oct 2025 · 10 co-filers$1.8MSightStream Biotherapeutics, Inc.Oct 2025 · 10 co-filers$1.8MSYNDEVRX INCNov 2024 · 5 co-filers$12.0MSYNDEVRX INCOct 2024 · 7 co-filers$29.4MSYNDEVRX INCDec 2023 · 7 co-filers$30.0MSightStream Biotherapeutics, Inc.Aug 2023 · 11 co-filers$1.3MSightStream Biotherapeutics, Inc.Jun 2023 · 11 co-filers$3.5MSightStream Biotherapeutics, Inc.Mar 2023 · 11 co-filers$3.5MAvilar Therapeutics, Inc.Feb 2023 · 19 co-filers$75.3MAvilar Therapeutics, Inc.Feb 2023 · 19 co-filers$75.3MSYNDEVRX INCDec 2022 · 7 co-filers$30.0MKera Therapeutics, Inc.Jun 2022 · 11 co-filersKera Therapeutics, Inc.Jun 2022 · 11 co-filers$1.9MMILESTONE BRANDS, LLCMar 2022 · 8 co-filers$5.0MSYNDEVRX INCDec 2021 · 7 co-filers$25.0MSYNDEVRX INCJan 2021 · 7 co-filers$15.0MMILESTONE BRANDS, LLCJan 2021 · 8 co-filersInvesture Global Equity Fund, LP - All Asset SeriesJan 2021 · 6 co-filersINVESTURE OPPORTUNITY FUND, LPJan 2021 · 4 co-filersINVESTURE EMERGING MARKETS FUND, LPJan 2021 · 6 co-filersAvilar Therapeutics, Inc.Dec 2020 · 9 co-filers$60.0MAvilar Therapeutics, Inc.Dec 2020 · 9 co-filers$60.0MSYNDEVRX INCJan 2020 · 6 co-filers$12.0M
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See David in the interactive graph →