Investor · San Francisco, CA
William F. Duhamel
Open William in the network graph →Filings
69
SEC Form D
Connections
54
co-filers
Capital
$20.0B
across filings
Active
Jul 2010
to Sep 2025
Most-connected co-filers (54)
Jason E. Moment · San Francisco, CA69 sharedRichard H. Voon · San Francisco, CA69 sharedAshish H. Pant · New York, NY64 sharedRoute One Investment Company, Llc · San Francisco, CA49 sharedRoute One Investment Company, Llc · San Francisco, CA49 sharedRoute One Investment Company, Llc · San Francisco, CA33 sharedWeiyi (Kathy) H. Huang · San Francisco, CA17 sharedZaeed J. Kalsheker · San Francisco, CA14 sharedAlice Evarts · San Francisco, CA10 sharedDouglas M. Macmahon · Dallas, TX10 sharedSteve Millham · New York, NY10 sharedRoic, Llc · San Francisco, CA10 sharedDavide Leone · San Francisco, CA10 sharedRoic, Llc · San Francisco, CA10 sharedThomas Mawhinney · Palo Alto, CA9 sharedEmily Wilson · San Diego, CA9 sharedGavin Beekman · Miami, FL8 sharedJames D. Roberge · PITTSBURGH, PA8 sharedThomas Steyer · SAN FRANCISCO, CA8 sharedJohn A. Staley, Iv · PITTSBURGH, PA8 sharedIsaac A. Souede · New York, NY8 sharedJoe Ackerman · Miami, FL8 sharedBarry P. Julien · LOS ANGELES, CA8 sharedThomas M. Buffington · New York, NY8 shared
Recent filings (69)
Route One Fund I, L.P.Sep 2025 · 9 co-filersRoute One Fund II, L.P.Sep 2025 · 9 co-filersRoute One Offshore Master Fund, L.P.Aug 2025 · 9 co-filersRoute One Fund II, L.P.Oct 2024 · 11 co-filersRoute One Fund I, L.P.Oct 2024 · 11 co-filersRoute One Offshore Master Fund, L.P.Jun 2024 · 9 co-filersRoute One Fund I, L.P.Jun 2024 · 9 co-filersRoute One Fund II, L.P.Jun 2024 · 9 co-filersRoute One Fund I, L.P.Jul 2023 · 9 co-filersRoute One Fund II, L.P.Jul 2023 · 9 co-filersRoute One Offshore Master Fund, L.P.Jul 2023 · 9 co-filersRoute One Fund I, L.P.Jul 2022 · 9 co-filersRoute One Fund II, L.P.Jul 2022 · 9 co-filersRoute One Offshore Master Fund, L.P.Jul 2022 · 9 co-filersRoute One Fund I, L.P.Jul 2021 · 10 co-filersRoute One Offshore Master Fund, L.P.Jul 2021 · 10 co-filersRoute One Fund II, L.P.Jul 2021 · 10 co-filersRoute One Fund II, L.P.Jul 2020 · 9 co-filersRoute One Fund I, L.P.Jul 2020 · 9 co-filersRoute One Offshore Master Fund, L.P.Jul 2020 · 9 co-filersRoute One Fund II, L.P.Aug 2019 · 7 co-filersRoute One Investment Company, L.P.Aug 2019 · 8 co-filersRoute One Offshore Master Fund, L.P.Aug 2019 · 7 co-filersRoute One Fund I, L.P.Aug 2019 · 7 co-filersRoute One Fund II, L.P.Jun 2018 · 6 co-filers
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See William in the interactive graph →