Ledger.
Investor · SAN FRANCISCO, CA

William Mastin

Open William in the network graph →
Filings
17
SEC Form D
Connections
168
co-filers
Capital
$22.5M
across filings
Active
Aug 2018
to Sep 2022

Most-connected co-filers (168)

Ian Milbourn · Luxembourg, Luxembourg6 sharedJazmin Medina · Burlingame, CA5 sharedSamant Shashank · San Jose, CA5 sharedJeffrey Bede · Seattle, WA4 sharedSteven Black · SAN FRANCISCO, CA4 sharedSten Tamkivi · SAN FRANCISCO, CA4 sharedAnupam Singhal · SAN FRANCISCO, CA4 sharedPeter Dembicki · VANCOUVER, British Columbia, Canada3 sharedBetsy L. Battle · New York, NY3 sharedAlex F. Hern · Denver, CO3 sharedCliff Langford · Grand Duchy of Luxembourg, Luxembourg3 sharedWilliam C. Nordlund · Dallas, TX3 sharedKeith C. Mallet · St Helier, Y93 sharedJack Feldman · Las Vegas, NV3 sharedTyler Mitchell · New York, NY3 sharedAllison B. Nolan · Grand Cayman, Cayman Islands3 sharedCeleste R. Barone · Wilton, CT3 sharedRobert K. Simmons · Dallas, TX3 sharedEric Graham · Seattle, WA3 sharedWilliam A. Shopoff · Irvine, CA3 sharedFrederick M. Paulman · Chicago, IL3 sharedAndrew N. Galloway · Grand Cayman, Cayman Islands3 sharedDon M. Bechter · Chicago, IL3 sharedWarren Fisher · Tampa, FL3 shared

Recent filings (17)

TEACHERS INSURANCE & ANNUITY ASSOCIATION OF AMERICAJan 2026 · 24 co-filersTEACHERS INSURANCE & ANNUITY ASSOCIATION OF AMERICAJan 2025 · 69 co-filersTEACHERS INSURANCE & ANNUITY ASSOCIATION OF AMERICAJan 2024 · 67 co-filersTopia Inc.Jan 2024 · 8 co-filers$15.1MTopia Inc.Jan 2024 · 8 co-filers$11.8MTopia Inc.Jan 2024 · 8 co-filers$15.1MTopia Inc.Jan 2024 · 8 co-filers$11.8MCota Growth Fund, L.P.Aug 2023 · 10 co-filersHowdy.com, Inc.Jan 2023 · 8 co-filers$5.0MArq LtdSep 2022 · 27 co-filers$1.7MCota Growth Fund, L.P.Aug 2022 · 10 co-filersAustin Software, Inc.Aug 2022 · 8 co-filers$13.0MHeart of Rock & Roll Broadway Ltd Liability CoJan 2021 · 4 co-filers$16.0MTopia LtdMay 2020 · 41 co-filers$12.6MTopia LtdMay 2020 · 41 co-filers$12.6MHeart of Rock & Roll Broadway Ltd Liability CoFeb 2020 · 2 co-filers$16.0MArq LtdFeb 2019 · 29 co-filers$55.0MHeart of Rock & Roll Broadway Ltd Liability CoFeb 2019 · 2 co-filers$16.0MArq LtdAug 2018 · 19 co-filers$55.0M

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