Investor · Birmingham, AL

William K. Holbrook

Open William in the network graph →

Filings

40

SEC Form D

Connections

182

co-filers

Capital

$1.5M

across filings

Active

Oct 2011

to Nov 2016

Most-connected co-filers (182)

James Holbrook, Jr · WALPOLE, MA11 shared Philip A. White · Birmingham, AL11 shared Steven Codispoti · New York, NY9 shared Jeffery W. Thacher · Roswell, GA8 shared Hallet Ogburn · Nashville, TN7 shared Alonzo H. Lee, Jr · BIRMINGHAM, AL7 shared Stephen D. Lister · Toronto, Ontario, Canada6 shared Constantine Triandafellos · North Bergen, NJ6 shared Thomas Howell · Minneapolis, MN5 shared Nirav B. Shah · Dallas, TX5 shared Sarah A. Bradley · Dallas, TX5 shared Robert W. Sperry · Dallas, TX5 shared William R. Mansfield · CUTLER BAY, FL5 shared Nicholas Hayes · San Diego, CA5 shared David W. Knickel · Dallas, TX5 shared Daniel J. Hopkin · Dallas, TX5 shared Jim Wills · Nashville, TN5 shared Scott Delman · Manhasset, NY5 shared Steve Oldham · HOUSTON, TX5 shared Kevin Surace · San Diego, CA5 shared Ortelio R. Ruiz · CUTLER BAY, FL5 shared Andrew S. Rosen · Dallas, TX5 shared Thomas B. Ward · Nashville, TN5 shared Peter Kepich · Hiram, OH5 shared

Recent filings (40)

Wherible GPS, Inc.Jul 2025 · 6 co-filers$3.0M Wherible GPS, Inc.Jul 2025 · 6 co-filers$3.0M Preventric Diagnostics, LLCJun 2021 · 11 co-filers$7.0M Preventric Diagnostics, LLCOct 2020 · 12 co-filers$4.0M Preventric Diagnostics, LLCAug 2020 · 11 co-filers$4.0M AL ADEF IV, LPJan 2020 · 8 co-filers AL ILP II, LPDec 2019 · 8 co-filers AL MLC I, LPMay 2019 · 5 co-filers$2.5M Enhanced Healthcare Partners Co-invest, LLCMay 2019 · 13 co-filers EHP GP Co-invest, LLCMay 2019 · 11 co-filers Enhanced Healthcare Partners, LPMay 2019 · 11 co-filers AL ADEF III, LPJul 2018 · 3 co-filers$10.0M AL MLC I, LPJul 2018 · 3 co-filers$1.9M Wherible GPS, Inc.Jun 2017 · 7 co-filers$600K KPQ Holdings LPApr 2017 · 19 co-filers MedProctor, LLCNov 2016 · 20 co-filers$1.7M Florida Food Holdings L.P.Oct 2016 · 19 co-filers Keynes Leveraged Quantitative Strategies Fund LtdJun 2016 · 11 co-filers Wherible GPS, Inc.Mar 2016 · 7 co-filers$600K MedPass Health, LLCJan 2016 · 20 co-filers$1.0M KPQ Holdings LPSep 2015 · 19 co-filers Keynes Leveraged Quantitative Strategies Fund LtdSep 2015 · 11 co-filers MedPass Health, LLCSep 2015 · 19 co-filers$1.0M Kettle Holdings, LPAug 2015 · 19 co-filers Trilliant Holdings L.P.Aug 2015 · 19 co-filers

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