Investor · Coralville, IA

John Bertrand

Open John in the network graph →

Filings

26

SEC Form D

Connections

111

co-filers

Capital

$49.5M

across filings

Active

Feb 2021

to Dec 2025

Most-connected co-filers (111)

Michael Abramoff · Coralvill, IA8 shared William Frist · Nashville, TN8 shared Ryan P. Rosenbaum · Kansas City, MO7 shared T. G. Mitchell · Grand Cayman, Cayman Islands4 shared Howard Leach · Coralvill, IA4 shared Robert Eddy · TAMPA, FL4 shared Trevor Baldwin · TAMPA, FL4 shared Drew Oetting · New York, NY4 shared Seth Rainford · Coralville, IA4 shared Thomas P. Ferguson · Kansas City, MO3 shared Bruce Israel · Bloomfield Hills, MI3 shared Davie M. Baccei · San Francisco, CA3 shared Ranjit Mathoda · Baldwin Place, NY3 shared William T. Booth · Traverse City, MI3 shared Mark Grabowski · Madison, CT3 shared Jack Mcdonald · Oakland, CA3 shared Jean-Marc Lesieur · Grand Cayman, Cayman Islands3 shared Blake W. Wettengel · ALISO VIEJO, CA3 shared Dror Bar-Ziv · Oakland, CA3 shared Brian Nelson · Aliso Viejo, CA3 shared Tanya E. Muro · ALISO VIEJO, CA3 shared David Schwartz · Oakland, CA3 shared Samantha R. Brown · San Francisco, CA3 shared Jeffrey Bazar · San Francisco, CA3 shared

Recent filings (26)

Zippy, Inc. /DEDec 2025 · 6 co-filers$19.0M Zippy, Inc. /DEDec 2025 · 6 co-filers$19.0M KeyCare, Inc.Apr 2025 · 14 co-filers$21.8M KeyCare, Inc.Apr 2025 · 14 co-filers$21.8M Daupler, Inc.Oct 2024 · 4 co-filers$10.0M HUMMINGBIRD HEALTHCARE SPV 2, LLCJun 2024 · 3 co-filers$1.1M HUMMINGBIRD HEALTHCARE SPV 2, LLCJun 2024 · 3 co-filers$1.1M HUMMINGBIRD HEALTHCARE SPV, LLCMay 2023 · 3 co-filers$1.2M HUMMINGBIRD HEALTHCARE SPV, LLCMay 2023 · 3 co-filers$1.2M Daupler, Inc.Feb 2023 · 1 co-filer$1.5M Daupler, Inc.Feb 2023 · 1 co-filer$1.5M Digital Diagnostics Inc.Aug 2022 · 25 co-filers$76.4M KeyCare, Inc.Aug 2022 · 10 co-filers$30.0M KeyCare, Inc.Aug 2022 · 10 co-filers$30.0M Digital Diagnostics Inc.May 2022 · 23 co-filers$55.0M Daupler, Inc.Feb 2022 · 8 co-filers$3.3M Daupler, Inc.Apr 2021 · 8 co-filers$4.0M Digital Diagnostics Inc.Feb 2021 · 18 co-filers$15.0M Digital Diagnostics Inc.Feb 2021 · 18 co-filers$15.0M Madeira Capital Investments LtdSep 2020 · 8 co-filers Cyclerion Therapeutics, Inc.Aug 2020 · 34 co-filers$24.3M Daupler, Inc.Jul 2020 · 7 co-filers$500K Digital Diagnostics Inc.Jun 2020 · 18 co-filers$15.0M CAMPUS WALK, DSTJan 2020 · 8 co-filers$10.7M ROCKLAND, DSTOct 2019 · 8 co-filers$20.1M

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