Investor · Chicago, IL

Brian Barnes

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Filings

30

SEC Form D

Connections

145

co-filers

Capital

$143.0M

across filings

Active

Mar 2019

to Oct 2025

Most-connected co-filers (145)

Ilan Shalit · Chicago, IL16 shared Sam Mcingvale · Chicago, IL13 shared Mike Maertens · Bonita Springs, FL12 shared Steve E. Kapp · BEDFORD, Nova Scotia, Canada12 shared Scott W. Gall · Bonita Springs, FL12 shared Darrin Campbell · BEDFORD, Nova Scotia, Canada12 shared Jim E. Albert · BALTIMORE, MD12 shared Monica E. Robertson · BALTIMORE, MD12 shared Jennifer S. Cordes · BALTIMORE, MD12 shared Michael Celano · Bala Cynwyd, PA12 shared Adele S. Willson · BALTIMORE, MD12 shared Carole Ben Maimon, Md · Bala Cynwyd, PA12 shared Cynthia S. Shonaiya · BALTIMORE, MD11 shared Michelle S. Harris · BALTIMORE, MD11 shared Andrew Leahy · Newark, NJ11 shared Matthew N. Goetz · Dallas, TX11 shared Timothy S. Barnhill · BALTIMORE, MD11 shared Rebecca Gold · New York, NY11 shared Ryan J. Schaefer · Fort Collins, CO11 shared Ari Paul · Stamford, CT11 shared Jeffrey Richards · New York, NY11 shared Zachary S. Shankman · BALTIMORE, MD11 shared Anup Swamy · New York, NY11 shared Jerry Labowitz · Newark, NJ11 shared

Recent filings (30)

HORD COPLAN MACHT, INC.Oct 2025 · 32 co-filers$250K HORD COPLAN MACHT, INC.Apr 2025 · 32 co-filers$1.2M HORD COPLAN MACHT, INC.Mar 2025 · 32 co-filers$525K HORD COPLAN MACHT, INC.Mar 2024 · 32 co-filers$250K HORD COPLAN MACHT, INC.Jun 2023 · 32 co-filers$2.0M HORD COPLAN MACHT, INC.Mar 2023 · 35 co-filers$1.8M HORD COPLAN MACHT, INC.Sep 2022 · 35 co-filers$344K Artizan Biosciences, Inc.Jun 2022 · 12 co-filers$18.9M HORD COPLAN MACHT, INC.Mar 2022 · 35 co-filers$1.5M HORD COPLAN MACHT, INC.Mar 2022 · 37 co-filers$1.5M Stonecreek Group Holdings, LLCDec 2021 · 12 co-filers$2.0M Stonecreek Group Holdings, LLCDec 2021 · 12 co-filers$2.0M M1 Holdings Inc.Sep 2021 · 15 co-filers$150.0M M1 Holdings Inc.Sep 2021 · 15 co-filers$150.0M HORD COPLAN MACHT, INC.Apr 2021 · 38 co-filers$1.4M HORD COPLAN MACHT, INC.Apr 2021 · 44 co-filers$1.4M M1 Holdings Inc.Mar 2021 · 19 co-filers$60.0M Artizan Biosciences, Inc.Dec 2020 · 13 co-filers$10.9M M1 Holdings Inc.Nov 2020 · 17 co-filers$50.0M M1 Holdings Inc.Jun 2020 · 14 co-filers$33.3M Artizan Biosciences, Inc.Mar 2020 · 17 co-filers$2.0M HORD COPLAN MACHT, INC.Mar 2019 · 36 co-filers$706K Artizan Biosciences, Inc.Mar 2019 · 17 co-filers$5.0M OPGEN INCAug 2018 · 13 co-filers$286K M1 Holdings Inc.May 2018 · 11 co-filers$13.1M

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