Investor · Watertown, MA

Joshua Gruenstein

Open Joshua in the network graph →

Filings

15

SEC Form D

Connections

43

co-filers

Capital

$55.0M

across filings

Active

Jul 2022

to Oct 2025

Most-connected co-filers (43)

Neil Cohen · Greenwood Village, CO11 shared Alon Kosowsky-Sachs · Cambridge, MA9 shared Kenneth A. Hood · San Diego, CA6 shared Pieter Burger · Durham, NC6 shared Christopher Meldrum · Durham, NC6 shared Thomas Kaiser · Durham, NC6 shared Greg Lyons · Dallas, TX6 shared Michael A. Harstrick · Boston, MA6 shared Jonathan A. Bronson · Hingham, MA6 shared Dennis Langer · Durham, NC6 shared John Hamer · Durham, NC6 shared Fred H. Jeffery · Safety Harbor, FL6 shared Lorraine J. Hall · Matthews, NC6 shared Andrew Durgee · Salisbury, CT6 shared Tim Woodward · Oakland, CA6 shared Eyal Ben David · New York, NY5 shared Richard An · New York, NY5 shared Robert T. Strong · Southampton, PA3 shared Ashley Abdo · Arcadia, CA3 shared Ken Desgarennes · Arcadia, CA3 shared Adam Heller · New York, NY3 shared Matthew Klein · New York, NY3 shared Jennifer Kim · San Francisco, CA3 shared D. M. Poag · Houston, TX3 shared

Recent filings (15)

Avicenna Biosciences, Inc.Oct 2025 · 14 co-filers$71K Tutor Intelligence, Inc.May 2025 · 5 co-filers$49.2M Tutor Intelligence, Inc.May 2025 · 5 co-filers$49.2M LongWater Diversified Access Fund, LPMay 2025 · 18 co-filers Avicenna Biosciences, Inc.Jul 2024 · 14 co-filers$6.0M Tutor Intelligence, Inc.Jul 2024 · 5 co-filers$8.3M Tutor Intelligence, Inc.Jul 2024 · 5 co-filers$8.3M LongWater Diversified Access Fund, LPMay 2024 · 18 co-filers Tutor Intelligence, Inc.May 2024 · 5 co-filers$6.3M Tutor Intelligence, Inc.May 2024 · 5 co-filers$6.3M Avicenna Biosciences, Inc.Feb 2024 · 14 co-filers$10.0M EVCS Holdings, Inc.Jan 2024 · 17 co-filers$20.0M EVCS Holdings, Inc.Dec 2023 · 17 co-filers$20.0M Avicenna Biosciences, Inc.Mar 2023 · 14 co-filers$41K Tutor Intelligence, Inc.Jan 2023 · 4 co-filers$4.2M Tutor Intelligence, Inc.Jan 2023 · 4 co-filers$4.2M Avicenna Biosciences, Inc.Dec 2022 · 14 co-filers$6.0M Avicenna Biosciences, Inc.Oct 2022 · 14 co-filers$18K EVCS Holdings, Inc.Jul 2022 · 16 co-filers$18.9M

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