Investor · Boston, MA

John F. Brennan

Open John in the network graph →

Filings

13

SEC Form D

Connections

11

co-filers

Capital

$4.1B

across filings

Active

Mar 2010

to Oct 2025

Most-connected co-filers (11)

Tim Woolaver · Grand Cayman, Cayman Islands12 shared Christopher C. Bowring · Grand Cayman, Cayman Islands12 shared Matthew Klein · Greenville, SC2 shared Zavain P. Dar · MENLO PARK, CA2 shared Reid P. Hutchins · GLENN FALLS, NY2 shared Andrew D. Klein · Amsterdam, P72 shared Edward Pantzer · New York, NY1 shared A. Rich · Boston, MA1 shared Michael P. Mcgrath · New York, NY1 shared Martin S. Lang · Grand Cayman, Cayman Islands1 shared A. O'Hara · Grand Cayman, Cayman Islands1 shared

Recent filings (13)

SIRIOS FOCUS FUND LTDOct 2025 · 4 co-filers SIRIOS FOCUS FUND LTDOct 2024 · 6 co-filers SIRIOS FOCUS FUND LTDOct 2023 · 4 co-filers SIRIOS FOCUS FUND LTDOct 2022 · 4 co-filers SIRIOS FOCUS FUND LTDOct 2021 · 4 co-filers SIRIOS FOCUS FUND LTDOct 2020 · 4 co-filers SIRIOS FOCUS FUND LTDOct 2019 · 4 co-filers SIRIOS FOCUS FUND LTDOct 2018 · 4 co-filers SIRIOS FOCUS FUND LTDOct 2017 · 4 co-filers SIRIOS FOCUS FUND LTDOct 2016 · 6 co-filers SIRIOS FOCUS FUND LTDOct 2015 · 6 co-filers SIRIOS FOCUS FUND LTDOct 2014 · 4 co-filers SIRIOS FOCUS FUND LTDMar 2010 · 3 co-filers

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