Investor · San Diego, CA

William Rastetter

Open William in the network graph →

Filings

63

SEC Form D

Connections

437

co-filers

Capital

$297.6M

across filings

Active

May 2022

to Nov 2025

Most-connected co-filers (437)

Kurt Von Emster · MENLO PARK, CA9 shared John B. Mendlein · CAMBRIDGE, MA9 shared Amir Nashat · San Diego, CA9 shared Richard Klausner · Mountain View, CA9 shared Jishnu Bhattacharjee · San Francisco, CA9 shared Jeffrey T. Huber · Menlo Park, CA9 shared Karen M. Sills · Hartford, CT8 shared Robert T. Nelsen · Menlo Park, CA7 shared Pascale H. Witz · San Diego, CA7 shared Stephen A. Block · Irvine, CA7 shared Catherine T. Friedman · Menlo Park, CA7 shared Derek Richardson · Seattle, WA7 shared Timothy P. Coughlin · San Diego, CA7 shared Min T. Cui · Menlo Park, CA7 shared Harry Braunstein · Woodbury, NY7 shared Norbert R. Ryan, Jr · Kansas City, MO7 shared Robert T. Nelsen · Chicago, IL7 shared Mark J. Enyedy · San Diego, CA6 shared Doug Renert · Seattle, WA6 shared Susan L. Kelley · San Diego, CA6 shared Kaye Foster · MENLO PARK, CA6 shared Stelios R. Papadopoulos · San Diego, CA6 shared David R. Baltimore · San Diego, CA6 shared Tabbert Teng · San Diego, CA6 shared

Recent filings (63)

Iambic Therapeutics, Inc.Nov 2025 · 31 co-filers$125.0M Iambic Therapeutics, Inc.Nov 2025 · 31 co-filers$125.0M Artea Secondaries II, LPJul 2025 · 11 co-filers Dare Bioscience, Inc.Nov 2024 · 7 co-filers$15.0M Deako, Inc.Jul 2024 · 8 co-filers$3.4M Iambic Therapeutics, Inc.Jun 2024 · 26 co-filers$50.0M Iambic Therapeutics, Inc.Jun 2024 · 26 co-filers$50.0M Iambic Therapeutics, Inc.May 2024 · 26 co-filers$38.0M Iambic Therapeutics, Inc.May 2024 · 26 co-filers$38.0M Iambic Therapeutics, Inc.Apr 2024 · 26 co-filers$38.0M Iambic Therapeutics, Inc.Apr 2024 · 26 co-filers$38.0M Dare Bioscience, Inc.Dec 2023 · 13 co-filers$4.2M Artea Secondaries I, LPOct 2023 · 11 co-filers$75.0M Iambic Therapeutics, Inc.Oct 2023 · 25 co-filers$110.0M Iambic Therapeutics, Inc.Oct 2023 · 25 co-filers$110.0M Facultas Fund 3, L.P.Nov 2022 · 32 co-filers Deako, Inc.Oct 2022 · 8 co-filers$13.4M AIR STREET CAPITAL II LPAug 2022 · 57 co-filers BlackRock Impact Opportunities Fund, L.P.May 2022 · 44 co-filers AIR STREET CAPITAL II LPMay 2022 · 59 co-filers Regulus Therapeutics Inc.Dec 2021 · 37 co-filers$34.6M Dare Bioscience, Inc.Sep 2021 · 11 co-filers$3.5M Deako, Inc.Mar 2021 · 11 co-filers$12.5M Regulus Therapeutics Inc.Dec 2020 · 35 co-filers$34.5M Infusion Software IncAug 2020 · 29 co-filers$5.0M

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