Investor · SAN FRANCISCO, CA

Carl Byers

Open Carl in the network graph →

Filings

11

SEC Form D

Connections

59

co-filers

Capital

$310.4M

across filings

Active

Apr 2012

to Oct 2025

Most-connected co-filers (59)

Adam Lathram · Boston, MA3 shared Andrew Le · Boston, MA3 shared Marcelin O'Neill · Vancouver, British Columbia, Canada2 shared John Connors · Brookline, MA2 shared Anand Nathan · Los Gatos, CA2 shared Bharath Ganesan · New York, NY2 shared Fay Rotenberg · Wellesley, MA2 shared Stephen D. Miles · Oxford, MS2 shared Meena Mallipeddi · Los Gatos, CA2 shared Joseph Mayer · NEW YORK, NY2 shared Laura Veroneau · Carlsbad, CA2 shared Slawek Kierner · Boston, MA2 shared William Hambrecht · New York, NY2 shared Jordan A. Gray · Boston, MA1 shared Hai A. Nguyen · Boston, MA1 shared Colin H. Toney · New York, NY1 shared Pen Equity Iv LLC · Norcross, GA1 shared Thomas O'Neill · New York, NY1 shared Ken H. Goulet · New York, NY1 shared Judi A. Grupp · Boston, MA1 shared Andrew Firlik, M.D · Boston, MA1 shared Greg H. Deavens · New York, NY1 shared Dr. Stephen Klasko · Los Gatos, CA1 shared Andrew B. Adams · Oxford, MS1 shared

Recent filings (11)

T SQRD, Inc.Oct 2025 · 7 co-filers$20.0M T SQRD, Inc.Oct 2025 · 7 co-filers$20.0M Zus Health, Inc.Mar 2023 · 13 co-filers$40.0M Zus Health, Inc.Mar 2023 · 13 co-filers$40.0M T SQRD, Inc.Mar 2022 · 5 co-filers$17.6M T SQRD, Inc.Mar 2022 · 5 co-filers$17.6M Quartet Health, Inc.Dec 2021 · 25 co-filers$120.0M Quartet Health, Inc.Dec 2021 · 25 co-filers$120.0M Zealth, Inc.Nov 2021 · 7 co-filers$100.0M Zealth, Inc.Nov 2021 · 7 co-filers$100.0M Buoy Health, Inc.Nov 2020 · 17 co-filers$37.5M Buoy Health, Inc.Nov 2020 · 17 co-filers$37.5M Stride Health, Inc.Oct 2019 · 5 co-filers$11.0M Stride Health, Inc.Oct 2019 · 5 co-filers$11.0M Buoy Health, Inc.Oct 2019 · 20 co-filers$22.7M Firefly Health, Inc.Sep 2019 · 13 co-filers$10.2M Buoy Health, Inc.Aug 2017 · 9 co-filers$6.7M Democracy Ventures, Inc.Apr 2012 · 3 co-filers$500K Democracy Ventures, Inc.Apr 2012 · 3 co-filers$500K

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