Ledger.
Investor · New York, NY

Mark Fischer

Open Mark in the network graph →
Filings
12
SEC Form D
Connections
76
co-filers
Capital
$60.0M
across filings
Active
Sep 2022
to Dec 2025

Most-connected co-filers (76)

Jaclyn Chen · New York, NY9 sharedStephanie Choo · New York, NY4 sharedBirch Creek Capital, LLC · PHILADELPHIA, PA4 sharedKenneth E. Chenault · Cambridge, MA4 sharedRoger Goodell · New York, NY4 sharedPaul Yablon · New York, NY4 sharedTim Mayopoulos · New York, NY3 sharedStephen Carlson · Boston, MA2 sharedRoss Radel · Monona, WI2 sharedBeverly E. Dobrochowski · Baltimore, MD2 sharedBrett R. Chugg · Tirat Carmel, L32 sharedPaul D. Ryan · Janesville, WI2 sharedGregory A. Smith · Janesville, WI2 sharedGrant S. Jackson · Grand Cayman, Cayman Islands2 sharedAmir Abolfathi · Menlo Park, CA2 sharedAnton M. Asmuth · Janesville, WI2 sharedPhilip R. Broenniman · New York, NY2 sharedTim Dumore · San Mateo, CA2 sharedAmirali Talasaz · San Mateo, CA2 sharedHuafeng Wen · San Mateo, CA2 sharedRita O'Connor · San Mateo, CA2 sharedMark Foley · San Mateo, CA2 sharedHarley Miller · Brooklyn, NY2 sharedGregory R. Piefer · Janesville, WI2 shared

Recent filings (12)

Room40 Capital Partners Offshore Ltd.Feb 2026 · 1 co-filerROOM40 CAPITAL PARTNERS U.S. LPJan 2026BenePass, Inc.Dec 2025 · 10 co-filers$40.0MBenePass, Inc.Dec 2025 · 10 co-filers$40.0MRoom40 Capital Partners Offshore Ltd.Feb 2025 · 5 co-filersROOM40 CAPITAL PARTNERS U.S. LPJan 2025 · 2 co-filersRoom40 Capital Partners Offshore Ltd.Feb 2024 · 5 co-filersBenePass, Inc.Feb 2024 · 12 co-filers$20.0MBenePass, Inc.Feb 2024 · 12 co-filers$20.0MROOM40 CAPITAL PARTNERS U.S. LPJan 2024 · 2 co-filersIlluminated Holdings, Inc.Oct 2023 · 33 co-filers$125.0MuLab Systems, Inc.Oct 2022 · 38 co-filers$109.6MIlluminated Holdings, Inc.Sep 2022 · 36 co-filersuLab Systems, Inc.Sep 2022 · 38 co-filers$109.6M

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