Ledger.
Investor · St. Paul, MN

Robert Mairs

Open Robert in the network graph →
Filings
20
SEC Form D
Connections
53
co-filers
Capital
$77.2M
across filings
Active
Sep 2023
to Nov 2025

Most-connected co-filers (53)

Mark Henneman · St. Paul, MN16 sharedJohn Bergstrom · St. Paul, MN13 sharedJeremy Abelson · denver, CO11 sharedTyler J. Resch · Chicago, IL11 sharedJonpaul J. Jonkheer · Chicago, IL11 sharedTimothy S. Roniger · London, United Kingdom11 sharedMason H. Resch · Chicago, IL11 sharedTjebbe Cornelis S. De Jong · London, United Kingdom11 sharedMichael A. Mcmahon · Chicago, IL4 sharedDeborah Quazzo · Chicago, IL4 sharedIan Chiu · New York, NY4 sharedDavid Blake · Alpine, UT4 sharedSamuel W. Feinburg · Los Angeles, CA4 sharedManny Villafana · Minneapolis, MN3 sharedR. Brandon Tidwell · Salt Lake City, UT3 sharedLori Ramirez · Houston, TX3 sharedDavid K. Peterson · Valencia, CA3 sharedScott Burns · St. Paul, MN3 sharedTrevian Partners, LLC · Evanston, IL3 sharedJohn R. Kline · New York, NY3 sharedScott Lindeman · Pleasanton, CA3 sharedJon D. Bosse · Los Angeles, CA3 sharedEdgar D. Jannotta Jr · Lowell, MA3 sharedJohn Amboian · Chicago, IL3 shared

Recent filings (20)

Mairs & Power Ventures Fund II, LPNov 2025 · 8 co-filersBowmoor Global Alpha Aggressive Fund LLCOct 2025 · 8 co-filersHyperion Fund LLCAug 2025 · 8 co-filersHyperion Fund LLCJul 2025 · 8 co-filersHyperion Fund LLCJun 2025 · 8 co-filersMulti Asset Volatility Capture Fund LLCMay 2025 · 8 co-filersMairs & Power Ventures Fund II, LPNov 2024 · 10 co-filersBowmoor Global Alpha Aggressive Fund LLCAug 2024 · 8 co-filersActive Vol Fund LLCFeb 2024 · 8 co-filersHyperion Fund LLCOct 2023 · 8 co-filersMairs & Power Ventures Fund I, LPSep 2023 · 9 co-filersDegreed, Inc.Feb 2023 · 14 co-filers$50.9MHyperion Fund LLCOct 2022 · 8 co-filersMairs & Power Ventures Fund I, LPMar 2022 · 12 co-filersHyperion Fund LLCNov 2021 · 8 co-filersMairs & Power Ventures Fund I, LPSep 2021 · 14 co-filersDegreed, Inc.Jun 2021 · 19 co-filers$154.6MDegreed, Inc.Nov 2020 · 20 co-filers$47.6MHyperion Fund LLCSep 2020 · 8 co-filersDegreed, Inc.Sep 2020 · 20 co-filers$42.6M

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