Investor · Austin, TX

Bill B. Harrington

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Filings

9

SEC Form D

Connections

39

co-filers

Capital

$75.4M

across filings

Active

May 2021

to Mar 2025

Most-connected co-filers (39)

Casey B. Tansey · Austin, TX9 shared Ashley Bittner · Menlo Park, CA5 shared Daniel E. Kattan · Aventura, FL5 shared Saul E. Levy · Aventura, FL5 shared Brigette Lau · Menlo Park, CA5 shared Richard J. Foust · Austin, TX2 shared Nelson B. Curnes · Austin, TX2 shared Joseph Mayernik · Cranberry, PA2 shared Thomas Sibley · Concord, MA2 shared Kevin M. Ruth · New York, NY2 shared Jarett Wait · New York, NY2 shared Ccf GP, LLC · Greenwich, CT2 shared Antonino M. Bocchio · Luxembourg, Luxembourg2 shared Ana Maria A. Ramos · Luxembourg, Luxembourg2 shared Kimberly Smith · Grand Cayman, Cayman Islands2 shared Keith Huckaby · Minneapolis, MN2 shared Jeffrey D. Malec · Chicago, IL2 shared Ryan N. Brown · Downers Grove, IL2 shared Attain Portfolio Advisors, LLC · Chicago, IL2 shared Deb Gardiner · Tinley Park, IL2 shared Andrew Barr · San Francisco, CA2 shared Thomas J. Curnes Ii · Austin, TX2 shared Sunil Raichand, Md · Downers Grove, IL1 shared Rockford N. Yapp · Downers Grove, IL1 shared

Recent filings (9)

MicroTransponder, Inc.Mar 2025 · 18 co-filers$65.0M Firework Ventures LPSep 2022 · 5 co-filers$60.0M MicroTransponder, Inc.Sep 2022 · 14 co-filers$72.9M Midwest Center for Day Surgery, LLCApr 2022 · 13 co-filers$130K Firework Ventures LPJul 2021 · 5 co-filers$100.0M Firework Fuse Holdings II, LLCJul 2021 · 5 co-filers$1.3M Firework Fuse Holdings II, LLCJul 2021 · 5 co-filers$1.3M Midwest Center for Day Surgery, LLCMay 2021 · 16 co-filers$65K Firework Fuse Holdings I, LLCMay 2021 · 5 co-filers$4.0M

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