Investor · Calgary, Alberta, Canada

C. William Van Horne

Open C. in the network graph →

Filings

23

SEC Form D

Connections

55

co-filers

Capital

$1.9M

across filings

Active

Jan 2020

to Jan 2026

Most-connected co-filers (55)

Bruce Zessar · Chicago, IL16 shared Matthew Swaim · Chicago, IL16 shared Zafi S. Avnur · Watertown, MA16 shared Michael Nashat · Mississauga, Ontario, Canada14 shared James N. Arrol · Luxembourg, Luxembourg13 shared Advisory Research, Inc · Chicago, IL12 shared Advisory Research, Inc · Chicago, IL11 shared Advisory Research, Inc · Chicago, IL11 shared Ari Partners Gp Llc · Chicago, IL7 shared B. Andrew Clark · Toronto, Ontario, Canada6 shared Ari Partners Gp Llc · Chicago, IL6 shared A. Darren Lindsay · N. Vancouver, British Columbia, Canada6 shared Ellen Freeman · Chicago, IL5 shared Michael Palank · Los Angeles, CA5 shared David G. Doherty · CHICAGO, IL5 shared Brian D. Snyder · Winston Salem, NC4 shared Joness Lang · Vancouver, British Columbia, Canada4 shared David W. Mallett · Bexley, OH4 shared Thorpe Abbotts Capital, LLC · Charlottesville, VA4 shared Benjamin M. Hough · Winston Salem, NC4 shared Runsheng He · San Jose, CA4 shared Wayne F. Morgan · Winston Salem, NC4 shared Susan J. Hallgren · BURLINGAME, CA4 shared Richard B. Roberts · Winston Salem, NC4 shared

Recent filings (23)

Advisory Research Partners Fund, L.P.Jan 2026 · 3 co-filers ARI Founders Fund, LPJun 2025 · 8 co-filers Advisory Research Partners Fund, L.P.Jan 2025 · 10 co-filers ARI Founders Fund, LPJul 2024 · 8 co-filers Advisory Research Partners Fund, L.P.Jan 2024 · 10 co-filers ARI Founders Fund, LPJun 2023 · 11 co-filers ACM FINANCIAL TRUST INCJan 2023 · 20 co-filers$23.9M Advisory Research Partners Fund, L.P.Jan 2023 · 13 co-filers ARI 1740 Fund, L.P.Sep 2022 · 8 co-filers VISIONARY GOLD CORP.Jul 2022 · 17 co-filers$687K ARI Founders Fund, LPJun 2022 · 8 co-filers Advisory Research Partners Fund, L.P.Jan 2022 · 10 co-filers ACM FINANCIAL TRUST INCJan 2022 · 20 co-filers$66.1M ARI 1740 Fund, L.P.Sep 2021 · 5 co-filers ARI Founders Fund, LPJun 2021 · 8 co-filers VISIONARY GOLD CORP.Jun 2021 · 16 co-filers$1.2M Advisory Research Partners Fund, L.P.Jan 2021 · 13 co-filers ACM FINANCIAL TRUST INCJan 2021 · 20 co-filers$88.0M ADVISORY RESEARCH INTERNATONAL VALUE FUND LPJan 2021 · 8 co-filers ARI 1740 Fund, L.P.Sep 2020 · 8 co-filers Advisory Research Partners Fund, L.P.Jan 2020 · 13 co-filers ACM FINANCIAL TRUST INCJan 2020 · 20 co-filers$70.4M ADVISORY RESEARCH INTERNATONAL VALUE FUND LPJan 2020 · 8 co-filers

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