Investor · Hamilton, Bermuda

William Heyland

Open William in the network graph →

Filings

21

SEC Form D

Connections

8

co-filers

Capital

$13.3B

across filings

Active

Jan 2021

to Dec 2025

Most-connected co-filers (8)

Dawn R. Griffiths · HAMILTON, Bermuda21 shared John B. Collis · Boston, MA21 shared Laura Taylor · Hamilton, Bermuda10 shared Jean-Paul M. Dyer · Hamilton, Bermuda5 shared Adolfo M. Pena · Hamilton, Bermuda5 shared Ian H. Taylor · HAMILTON, Bermuda3 shared Helen Thornton · Hamilton, Bermuda1 shared John R. Warren · San Francisco, CA1 shared

Recent filings (21)

IRON CATASTROPHE FUND, LTD.Dec 2025 · 3 co-filers Ulu Fund Ltd.Dec 2025 · 3 co-filers Delos Fund LtdNov 2025 · 3 co-filers Magenta Fund Ltd.Apr 2025 · 3 co-filers Ulu Fund Ltd.Dec 2024 · 5 co-filers IRON CATASTROPHE FUND, LTD.Dec 2024 · 5 co-filers Delos Fund LtdDec 2024 · 5 co-filers Magenta Fund Ltd.Apr 2024 · 3 co-filers Ulu Fund Ltd.Dec 2023 · 3 co-filers IRON CATASTROPHE FUND, LTD.Dec 2023 · 3 co-filers Delos Fund LtdDec 2023 · 3 co-filers Magenta Fund Ltd.Apr 2023 · 3 co-filers Ulu Fund Ltd.Dec 2022 · 3 co-filers IRON CATASTROPHE FUND, LTD.Dec 2022 · 3 co-filers Delos Fund LtdDec 2022 · 3 co-filers Magenta Fund Ltd.Apr 2022 · 3 co-filers IRON CATASTROPHE FUND, LTD.Jan 2022 · 3 co-filers Ulu Fund Ltd.Jan 2022 · 3 co-filers Delos Fund LtdDec 2021 · 3 co-filers Magenta Fund Ltd.Apr 2021 · 3 co-filers Ulu Fund Ltd.Jan 2021 · 4 co-filers

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