Investor · Ann Arbor, MI
Brandon Bertrang
Open Brandon in the network graph →Filings
23
SEC Form D
Connections
53
co-filers
Capital
$2.5M
across filings
Active
Jan 2018
to Feb 2026
Most-connected co-filers (53)
Samuel B. Barnett · NORTHBROOK, IL15 sharedJohn Claytor · Village of Golf, FL15 sharedMatthew L. Aven · NORTHBROOK, IL15 sharedWayne Riley · Mountain View, CA15 sharedSbb Research Group Llc · Northbrook, IL14 sharedGabriel Dean · Lowell, MI14 sharedAdam Rondeau · Horace, ND11 sharedBrad A. Greenstein · Northbrook, IL11 sharedSean F. Nicolosi · Boston, MA11 sharedSbb Research Group Llc · Northbrook, IL10 sharedSbb Research Group Llc · Northbrook, IL10 sharedTom Waddell · Horace, ND10 sharedSandeep D. Navalgund · Northbrook, IL10 sharedDiameter Associates LLC · New York, NY9 sharedMarian M. Walters · Edison, NJ9 sharedWalter M. Kelly · Northbrook, IL9 sharedArkadi A. Kuhlmann · Jacksonville, FL8 sharedRemi Ducrocq · New York, NY8 sharedDavid B. Goone · New York, NY7 sharedM. Sbb Research Group Llc · NORTHBROOK, IL4 sharedMike Chick · Chicago, IL4 sharedM. Sbb Research Group Llc · Northbrook, IL4 sharedM. Sbb Research Group Llc · Northbrook, IL4 sharedPatrick Brady · Ann Arbor, MI4 shared
Recent filings (23)
SBB Research Group Polysight V LLCFeb 2026 · 5 co-filersSBB RESEARCH GROUP POLYSIGHT II LLCFeb 2026 · 5 co-filersSBB Research Group Polysight III, LLCFeb 2026 · 5 co-filersSBB Research Group Investors I LLCFeb 2026 · 5 co-filersSBB Research Group Polysight III, LLCSep 2025 · 14 co-filersSBB Research Group Investors I LLCAug 2025 · 14 co-filersSBB RESEARCH GROUP POLYSIGHT II LLCFeb 2025 · 17 co-filersSBB Research Group Polysight III, LLCFeb 2025 · 17 co-filersSBB Research Group Polysight III, LLCFeb 2024 · 17 co-filersSBB RESEARCH GROUP POLYSIGHT II LLCFeb 2024 · 17 co-filersSBB Research Group Polysight III, LLCFeb 2023 · 17 co-filersSBB RESEARCH GROUP POLYSIGHT II LLCFeb 2023 · 17 co-filersSBB Research Group Polysight Thor LLCJan 2023 · 16 co-filersSBB Research Group Polysight III, LLCMar 2022 · 17 co-filersSBB Research Group Polysight Thor LLCJan 2022 · 14 co-filersSBB Research Group Polysight Thor LLCJan 2021 · 8 co-filersSBB Research Group Polysight Thor LLCJan 2020 · 10 co-filersGuru Ventures, Inc.May 2019 · 17 co-filers$2.0MGuru Ventures, Inc.May 2019 · 17 co-filers$2.0MSBB Research Group Polysight Thor LLCJan 2019 · 8 co-filersLoanstar Technologies LLCNov 2018 · 11 co-filers$2.6MSBB Research Group Polysight Thor LLCJan 2018 · 10 co-filersLoanstar Technologies LLCJan 2018 · 11 co-filers$1.6M
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Brandon in the interactive graph →