Investor · NEW YORK, NY

Mason Capital Management Llc

Open Mason in the network graph →

Filings

16

SEC Form D

Connections

14

co-filers

Capital

$56.4B

across filings

Active

Mar 2011

to Mar 2026

Most-connected co-filers (14)

Jonathan D. Lewis · NEW YORK, NY15 shared Michael E. Martino · NEW YORK, NY15 shared Mason Capital Management Llc · New York, NY15 shared Gregory S. Bennett · Grand Cayman, Cayman Islands13 shared William E. Walmsley · Grand Cayman, Cayman Islands13 shared Colin D. Watson · NEW YORK, NY12 shared Alan P. Milgate · Grand Cayman, Cayman Islands9 shared Kevin Sherman · GREENWOOD VILLAGE, CO4 shared Bradley F. Dalton · Chapel Hill, NC3 shared Blackmore Trinda · NEW YORK, NY3 shared Joseph Lipscomb · Chevy Chase, MD2 shared Karl Khoury · Austin, TX2 shared David A. Bree · Grand Cayman, Cayman Islands2 shared Aileen Lee · San Francisco, CA1 shared

Recent filings (16)

MASON CAPITAL LTDMar 2026 · 3 co-filers MASON CAPITAL LTDMar 2025 · 8 co-filers MASON CAPITAL LTDMar 2024 · 8 co-filers MASON CAPITAL LTDMar 2023 · 8 co-filers MASON CAPITAL LTDFeb 2022 · 7 co-filers MASON CAPITAL LTDMar 2021 · 7 co-filers MASON CAPITAL LTDMar 2020 · 7 co-filers MASON CAPITAL LTDMar 2019 · 7 co-filers MASON CAPITAL LTDMar 2018 · 7 co-filers MASON CAPITAL LTDMar 2017 · 7 co-filers MASON CAPITAL LTDMar 2016 · 7 co-filers MASON CAPITAL LTDMar 2015 · 7 co-filers MASON CAPITAL LTDMar 2014 · 7 co-filers MASON CAPITAL LTDMar 2013 · 7 co-filers MASON CAPITAL LTDMar 2012 · 7 co-filers MASON CAPITAL LTDMar 2011 · 5 co-filers

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