Investor · Portland, ME

John Harrington

Open John in the network graph →

Filings

17

SEC Form D

Connections

145

co-filers

Capital

$21.8M

across filings

Active

Jul 2019

to Jul 2025

Most-connected co-filers (145)

Torey Penrod-Cambra · Portland, ME9 shared Corson Ellis · Portland, ME8 shared Anthony Paine · Portland, ME8 shared Elizabeth Peters · Portland, ME7 shared Ana F. Zacapa · San Francisco, CA6 shared Michael Crimmins · NEWPORT BEACH, CA6 shared William F. Foote · Cambridge, MA6 shared Marissa D. Wesely · New York, NY6 shared Rob A. Desantis · San Francisco, CA5 shared Cedarview Capital Management, LLC · New York, NY5 shared Martin A. Meyer · San Francisco, CA5 shared Philipp S. Patschkowski · London, United Kingdom5 shared Lindsey B. Bolger · Waterbury Center, VT5 shared Jeffrey Immelt · El Segundo, CA5 shared Salah D. Goss · Washington, Washington, D.C.5 shared Frances F. Reid · Cambridge, MA5 shared Space Fund, Inc · Dover, DE5 shared Derek P. Leo · New York, NY5 shared Mario D. Fernandez · Oregon City, OR5 shared Sophie D. Romana · Camden, ME5 shared Cedarview Capital Management, LP · New York, NY5 shared Macani D. Toungara · Washington, Washington, D.C.5 shared Earl Hopper · Incline Village, NV5 shared Anthony D. Turtrone · New York, NY5 shared

Recent filings (17)

Root Capital Inc.Jul 2025 · 54 co-filers Root Capital Inc.Jul 2024 · 62 co-filers HighByte, Inc.May 2024 · 18 co-filers$12.0M HighByte, Inc.Jul 2023 · 20 co-filers$3.3M Redwood Scientific Technologies, Inc.Jul 2023 · 9 co-filers$1.1M Redwood Scientific Technologies, Inc.Jul 2023 · 9 co-filers$1.1M Root Capital Inc.Jul 2023 · 59 co-filers HighByte, Inc.May 2023 · 20 co-filers$3.3M HighByte, Inc.Feb 2023 · 20 co-filers$3.0M Root Capital Inc.Jul 2022 · 52 co-filers HighByte, Inc.Dec 2021 · 14 co-filers$3.5M Root Capital Inc.Jul 2021 · 55 co-filers HighByte, Inc.Oct 2020 · 9 co-filers$500K HighByte, Inc.Oct 2020 · 9 co-filers$500K Root Capital Inc.Jul 2020 · 51 co-filers Agilon Capital Systematic Cayman Fund Ltd.Jul 2020 · 8 co-filers Flyreel, Inc.Dec 2019 · 12 co-filers$2.1M Flyreel, Inc.Dec 2019 · 12 co-filers$2.1M HighByte, Inc.Nov 2019 · 5 co-filers$750K HighByte, Inc.Nov 2019 · 5 co-filers$750K Agilon Capital Systematic Cayman Fund Ltd.Jul 2019 · 5 co-filers

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