Investor · Boston, MA
Michael A. Harstrick
Open Michael in the network graph →Filings
29
SEC Form D
Connections
101
co-filers
Capital
$2.1M
across filings
Active
Jul 2023
to Nov 2025
Most-connected co-filers (101)
Jonathan A. Bronson · Hingham, MA15 sharedMark De Souza · Chestnut Hill, MA14 sharedDavid W. Batchelor · Wayzata, MN14 sharedMichael Pytel · Denver, CO14 sharedHarris Associates Inc · Chicago, IL14 sharedHarris Associates L.P · Chicago, IL14 sharedTracy Henningsgard · New Rockford, ND14 sharedJesko Von Windheim · Durham, NC14 sharedJustin R. Moore · San Francisco, CA14 sharedSpencer Krug · New York, NY14 sharedJohn D. Kiser · Washington, Washington, D.C.14 sharedFarzan P. Hassani · Cypress, CA14 sharedDonald M. Miller · Wayzata, MN14 sharedPatrick J. Martucci · NEW YORK, NY14 sharedJill S. Marcotte · Durham, NC14 sharedDavid C. Carlson · Wayzata, MN14 sharedJames L. Mandel · Wayzata, MN14 sharedBankers American Capital Corporation · Mankato, MN14 sharedJeffrey J. Hattara · Wayzata, MN14 sharedFrancesca R. Cassisi · NEW YORK, NY14 sharedGeorge L. Murphy · Wellesley, MA14 sharedDave Cechota · Cedar Rapids, IA14 sharedDonald Hendrickson · New Rockford, ND14 sharedAlex Cooley · Seattle, WA14 shared
Recent filings (29)
J2 Ventures Strategic Opportunities E, L.P.Feb 2026 · 2 co-filers$12.0MJ2 Ventures Brookhaven Fund, L.P.Nov 2025 · 6 co-filers$250.0MAvicenna Biosciences, Inc.Oct 2025 · 14 co-filers$71KJ2 Ventures Strategic Opportunities D, L.P.Nov 2024 · 4 co-filers$6.5MOakmark Global Equity L.P.Sep 2024 · 53 co-filersOakmark International Equity L.P.Sep 2024 · 53 co-filersAvicenna Biosciences, Inc.Jul 2024 · 14 co-filers$6.0MAvicenna Biosciences, Inc.Feb 2024 · 14 co-filers$10.0MJ2 Ventures Argonne Fund (A), L.P.Nov 2023 · 6 co-filers$120.0MOakmark Global Equity L.P.Sep 2023 · 47 co-filersOakmark International Equity L.P.Sep 2023 · 47 co-filersJ2 Venture Strategic Opportunities B, L.P.Aug 2023 · 3 co-filers$2.1MJ2 Ventures Argonne Fund, L.P.Jul 2023 · 6 co-filers$120.0MAvicenna Biosciences, Inc.Mar 2023 · 14 co-filers$41KAvicenna Biosciences, Inc.Dec 2022 · 14 co-filers$6.0MAvicenna Biosciences, Inc.Oct 2022 · 14 co-filers$18KOakmark International Equity L.P.Sep 2022 · 47 co-filersOakmark Global Equity L.P.Sep 2022 · 47 co-filersJ2 Ventures Fund 2, LPAug 2021 · 10 co-filers$26.3MJ2 Ventures Fund 2, LPAug 2021 · 10 co-filersOakmark International Equity L.P.Jun 2021 · 48 co-filersOakmark Global Equity L.P.Jun 2021 · 48 co-filersOakmark Global Equity L.P.Jan 2021 · 48 co-filersOakmark International Equity L.P.Jan 2021 · 48 co-filersOakmark Global Equity L.P.Sep 2020 · 55 co-filers
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Michael in the interactive graph →