Investor · Boston, MA
William A. Muggia
Open William in the network graph →Filings
40
SEC Form D
Connections
92
co-filers
Capital
$153.8M
across filings
Active
Nov 2013
to Jul 2025
Most-connected co-filers (92)
George A. Eiskamp · San Diego, CA16 sharedDov Gertzulin · New York, NY8 sharedAlexandre Jais · New York, NY8 sharedAri D. Sass · New York, NY8 sharedMichael B. Mccormick · Scarsdale, NY8 sharedGeorge B. Bashforth · Camana Bay, Grand Cayman, Cayman Islands8 sharedAlaina A. Danley · Camana Bay, Cayman Islands8 sharedChristopher Young · Lexington, KY8 sharedRobert W. Galvin · New York, NY7 sharedAnushka M. Sunder · New York, NY6 sharedPhil W. Roe · Franklin, TN6 sharedWestfield Capital Management Company, L.P · Boston, MA6 sharedWestfield Partners, L.L.C · Boston, MA6 sharedWestfield Partners, L.L.C · Boston, MA6 sharedSusan H. Hollingsworth · Shaker Heights, OH6 sharedWestfield Capital Management Company, L.P · Boston, MA6 sharedKeith W. Sherin · Naples, FL6 sharedTerence W. Yap · Singapore, U05 sharedCharles P. Coleman Iii · New York, NY5 sharedSteve Gonzalez · New York, NY5 sharedNeil W. Simpkins · New York, NY5 sharedMarc Menas? · New York, NY5 sharedH. Lynn Massingale · Knoxville, TN5 sharedRomain Afflelou · New York, NY5 shared
Recent filings (40)
Westfield Select Growth Equity LPJul 2025 · 1 co-filerWESTFIELD ABSOLUTE RETURN FUND LPJan 2025 · 1 co-filerWestfield Select Growth Equity LPJul 2024 · 1 co-filerTN HoldCo, Inc.Mar 2024 · 29 co-filersTN HoldCo, Inc.Mar 2024 · 29 co-filersWestfield Disruptive Innovation Fund LPFeb 2024 · 1 co-filerWestfield Disruptive Innovation Fund LPFeb 2024 · 1 co-filerWESTFIELD ABSOLUTE RETURN FUND LPJan 2024 · 1 co-filerWestfield Select Growth Equity LPJul 2023 · 1 co-filerTN HoldCo, Inc.Mar 2023 · 29 co-filersTN HoldCo, Inc.Mar 2023 · 29 co-filersWestfield Disruptive Innovation Fund LPFeb 2023 · 2 co-filersWestfield Select Growth Equity LPJul 2022 · 1 co-filerSUN SUMMIT MINERALS CORP.Apr 2022 · 19 co-filers$198KTN HoldCo, Inc.Mar 2022 · 29 co-filersTN HoldCo, Inc.Mar 2022 · 29 co-filersWestfield Disruptive Innovation Fund LPFeb 2022 · 2 co-filersWestfield Health Care Fund LPFeb 2022 · 2 co-filersWestfield Select Growth Equity LPJul 2021 · 1 co-filerTN HoldCo, Inc.Mar 2021 · 29 co-filersTN HoldCo, Inc.Mar 2021 · 29 co-filersWestfield Disruptive Innovation Fund LPFeb 2021 · 2 co-filersWestfield Health Care Fund LPFeb 2021 · 2 co-filersWestfield Select Growth Equity LPJul 2020 · 1 co-filerSan Marco Resources Inc.Jun 2020 · 17 co-filers$251K
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See William in the interactive graph →