Investor · Boulder, CO

Brian Armstrong

Open Brian in the network graph →

Filings

30

SEC Form D

Connections

128

co-filers

Capital

$35.1M

across filings

Active

Apr 2009

to Mar 2025

Most-connected co-filers (128)

Barry M. Schuler · Menlo Park, CA12 shared Benjamin Leibowitz · New York, NY8 shared Nicolas Mouchel · New York, NY8 shared Bijan S. Modanlou · SAN FRANCISCO, CA6 shared Alta Park Partners, Llc · SAN FRANCISCO, CA6 shared Andrew Schwartz · Melbourne, Channel Islands6 shared Rene N. Nam-Hee · SAN FRANCISCO, CA6 shared Alta Park Partners, Llc · SAN FRANCISCO, CA6 shared Jayaveera N. Kodali · SAN FRANCISCO, CA6 shared Mary Piepenbrink · Dallas, TX6 shared Gerd Mayer · Melbourne, Channel Islands6 shared Mark Fisher · Melbourne, Channel Islands6 shared Joseph N. Bou-Saba · SAN FRANCISCO, CA6 shared Patrick Joyce · San Francisco, CA5 shared Fred Ehrsam · San Francisco, CA5 shared Michael Polansky · San Francisco, CA4 shared Jeffrey K. Horowitz · Los Angeles, CA4 shared Jeff Himawan · South San Francisco, CA3 shared Andrea Cwik · Austin, TX3 shared Joseph R. Zell · Denver, CO3 shared Kathryn Haun · San Francisco, CA3 shared Blair Humphreys · OKLAHOMA CITY, OK3 shared Grant Humphreys · OKLAHOMA CITY, OK3 shared Stephen A. Bowie · Memphis, TN3 shared

Recent filings (30)

NexEos Diagnostics, Inc.Feb 2026 · 6 co-filers$3.0M Humphreys Fund V, LPApr 2025 · 9 co-filers BitSaci CRYPTO GROUP LTDMar 2025 · 1 co-filer BitSaci CRYPTO GROUP LTDMar 2025 · 1 co-filer ResearchHub Technologies, Inc.Feb 2025 · 8 co-filers$2.0M NexEos Diagnostics, Inc.Jun 2024 · 17 co-filers$4.9M ResearchHub Technologies, Inc.Jun 2023 · 8 co-filers$5.3M HUMPHREYS FUND IV, LPDec 2022 · 8 co-filers$150.0M NexEos Diagnostics, Inc.Oct 2021 · 17 co-filers$9.7M HUMPHREYS FUND IV, LPOct 2021 · 8 co-filers$150.0M Alta Park Private Opportunities Fund, LP - Series IMar 2021 · 13 co-filers Alta Park Private Opportunities Fund, LP - Series IMar 2020 · 13 co-filers Alta Park Private Opportunities Fund, LP - Series IMar 2019 · 13 co-filers Alta Park Private Opportunities Fund, LP - Series IFeb 2019 · 13 co-filers Dizzion, Inc.Jan 2019 · 23 co-filers$800K Coinbase Global, Inc.Dec 2018 · 24 co-filers$50.0M Coinbase Global, Inc.Nov 2018 · 26 co-filers$500.0M Alta Park Opportunities Fund I, LPApr 2018 · 13 co-filers DashBid Media Inc.Sep 2017 · 9 co-filers$2.0M Coinbase Global, Inc.Aug 2017 · 10 co-filers$136.2M Coinbase Global, Inc.Aug 2017 · 10 co-filers$136.2M DashBid Media Inc.Apr 2017 · 14 co-filers$2.0M Alta Park Opportunities Fund I, LPApr 2017 · 13 co-filers POST.BID.SHIP., INC.Dec 2016 · 15 co-filers$1.5M POST.BID.SHIP., INC.Dec 2016 · 15 co-filers$1.5M

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