Investor · STAMFORD, CT

Mark J. Duggan

Open Mark in the network graph →

Filings

42

SEC Form D

Connections

124

co-filers

Capital

$9.2B

across filings

Active

Jan 2016

to Jul 2025

Most-connected co-filers (124)

Kurt L. Keilhacker · STAMFORD, CT35 shared Keitha L. Kinne · STAMFORD, CT31 shared Victoria L. Sassine · STAMFORD, CT31 shared Eric L. Rakowski · STAMFORD, CT31 shared Patrick J. Spellman · STAMFORD, CT30 shared Thomas L. Disbrow · STAMFORD, CT28 shared John A. Starace · STAMFORD, CT28 shared Clarence Cheuk · San Francisco, CA22 shared Dan J. Kelly · Chatham, NJ22 shared Joanna C. Nathan · Houston, TX22 shared Michael Stanton · New York, NY22 shared Thomas Runyon · Colorado Springs, CO22 shared RWCF Manager, LLC · Columbia, MD22 shared Owen S. Lee · Chatham, NJ22 shared Micheal C. Haimour · Houston, TX22 shared Mamode I. Nathadkhan · Grand Baie, O422 shared Joshua M. Gotlib · New York, NY22 shared Elias Manousos · San Francisco, CA22 shared Jayesh J. Patel · Las Cruces, NM22 shared Daniel J. Christopher · Middx, United Kingdom22 shared Meyer Orbach · New York, NY22 shared Jonathan Bombaci · Lowell, MA22 shared Brendan W. Lake · West Conshohocken, PA22 shared Garret W. Weston · STAMFORD, CT21 shared

Recent filings (42)

AMG Pantheon Infrastructure Subsidiary Fund, LLCJul 2025 · 35 co-filers AMG Pantheon Infrastructure Lead Fund, LLCJul 2025 · 35 co-filers AMG Pantheon Subsidiary Fund, LLCJan 2025 · 26 co-filers AMG Pantheon Lead Fund, LLCJan 2025 · 26 co-filers AMG Pantheon Credit Solutions Subsidiary Fund, LLCJan 2025 · 26 co-filers AMG Pantheon Master Fund, LLCJan 2025 · 26 co-filers AMG Pantheon Credit Solutions Lead Fund, LLCJan 2025 · 26 co-filers AMG Pantheon Credit Solutions Lead Fund, LLCAug 2024 · 29 co-filers AMG Pantheon Credit Solutions Subsidiary Fund, LLCAug 2024 · 29 co-filers AMG Pantheon Lead Fund, LLCJan 2024 · 29 co-filers AMG Pantheon Master Fund, LLCJan 2024 · 29 co-filers AMG Pantheon Subsidiary Fund, LLCJan 2024 · 29 co-filers Praxis Opportunity Fund, LLCAug 2023 · 13 co-filers AMG Pantheon Lead Fund, LLCJan 2023 · 29 co-filers AMG Pantheon Master Fund, LLCJan 2023 · 29 co-filers AMG Pantheon Subsidiary Fund, LLCJan 2023 · 29 co-filers Praxis Opportunity Fund, LLCAug 2022 · 13 co-filers AMG Pantheon Lead Fund, LLCJan 2022 · 35 co-filers AMG Pantheon Master Fund, LLCJan 2022 · 35 co-filers AMG Pantheon Subsidiary Fund, LLCJan 2022 · 35 co-filers AMG Pantheon Lead Fund, LLCNov 2021 · 35 co-filers AMG Pantheon Subsidiary Fund, LLCNov 2021 · 35 co-filers AMG Pantheon Master Fund, LLCNov 2021 · 35 co-filers Praxis Opportunity Fund, LLCAug 2021 · 13 co-filers AMG Pantheon Lead Fund, LLCJul 2021 · 32 co-filers

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