Investor · Alexandria, VA

William Porteous

Open William in the network graph →

Filings

14

SEC Form D

Connections

30

co-filers

Capital

$18.8M

across filings

Active

Apr 2023

to Oct 2025

Most-connected co-filers (30)

Lauren K. Stack · New York, NY8 shared Mark Phillips · Oakbrook Terrace, IL6 shared Brett Verkaik · Oakbrook Terrace, IL6 shared Mandy Mallott · Columbus, OH6 shared Chris Erickson · Denver, CO6 shared Crystal Muilenburg · Newport Beach, CA4 shared David M. Mcgovern · HERMOSA BEACH, CA4 shared Wiliam Miller · Fort Worth, TX2 shared Lisa Ross · Toronto, Ontario, Canada2 shared Bonnie D. Peat · Fort Worth, TX2 shared Marc D. Mcleroy · Fort Worth, TX2 shared Bryan D. Perkins · Fort Worth, TX2 shared Lee Atzil · New York, NY2 shared Jared L. Chupaila · CHICAGO, IL2 shared Cody Shandraw · Miami, FL2 shared Joe Caltabiano · Jupiter, FL2 shared Adam Wilkins · Jupiter, FL2 shared Zed Wang · Jupiter, FL2 shared Shant Banosian · Jupiter, FL2 shared Juan Lopez · Alexandria, VA2 shared Matthew Theurer · Alexandria, VA2 shared Mathew Martin · SANTA BARBARA, CA2 shared Joerg Diedrich · New York, NY2 shared Mary D. Gallagher · Fort Worth, TX2 shared

Recent filings (14)

Healing Realty Trust, Inc.Dec 2025 · 20 co-filers$18.1M HyperSpectral Corp.Oct 2025 · 14 co-filers$12.2M HyperSpectral Corp.Oct 2025 · 14 co-filers$7.0M HyperSpectral Corp.Oct 2025 · 14 co-filers$12.2M HyperSpectral Corp.Oct 2025 · 14 co-filers$7.0M Healing Realty Trust, Inc.Aug 2025 · 26 co-filers$25.0M Marlin Heritage Europe Executive Fund III, SCSpJun 2025 · 2 co-filers 11 Tribes Ventures Access Fund II, LPApr 2025 · 5 co-filers$12.0M 11 Tribes Ventures Fund II, LPApr 2025 · 5 co-filers$40.0M MARLIN HERITAGE EUROPE III, SCSPSep 2024 · 2 co-filers 11 Tribes Ventures Fund II, LPMar 2024 · 5 co-filers$40.0M 11 Tribes Ventures Access Fund II, LPMar 2024 · 5 co-filers$10.0M EXECUTIVE FUND III-H, L.P.Sep 2023 · 2 co-filers MARLIN HERITAGE EUROPE III, SCSPSep 2023 · 2 co-filers 11 Tribes Ventures Access Fund II, LPApr 2023 · 5 co-filers$10.0M 11 Tribes Ventures Fund II, LPApr 2023 · 5 co-filers$40.0M

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