Investor · Chicago, IL

Mark S. Frigo

Open Mark in the network graph →

Filings

12

SEC Form D

Connections

59

co-filers

Capital

$14.6M

across filings

Active

Nov 2022

to Nov 2025

Most-connected co-filers (59)

Harper B. Reed · Chicago, IL12 shared Thomas Krane · New York, NY8 shared Craig B. Lurey · Chicago, IL8 shared Darren S. Guccione · Chicago, IL7 shared Howard B. Tullman · Chicago, IL7 shared Howard Tullman · Chicago, IL5 shared James Larrick · Newton, MA4 shared Mark Tepper · Newton, MA4 shared Andrew Pearlman · Newton, MA4 shared Donna H. Morton · Alexandria, VA4 shared Matthew J. Crill · St Helier, Y93 shared Julia A. Chapman · St Helier, Y93 shared Len B. Ferrington · Chicago, IL3 shared Michael M. Gray · St Helier, Y93 shared Allison B. Gates · San Mateo, CA3 shared Colin B. Tobias · San Mateo, CA3 shared Thomas Gronstal · Spirit Lake, IA3 shared Ryan Mckenna · Scottsdale, AZ3 shared Graeme Smith · St Helier, Y93 shared Trutino Capital Management, LLC · New York, NY3 shared Greg Golub · San Mateo, CA3 shared Axonic Capital GP LLC · New York, NY2 shared John F. Cozzi · New York, NY2 shared Axonic Special Opportunities SBL Master Fund GP LLC · New York, NY2 shared

Recent filings (12)

Callpod, Inc.Nov 2025 · 6 co-filers Callpod, Inc.Nov 2024 · 8 co-filers Callpod, Inc.Nov 2023 · 6 co-filers Blue Amber Partners I, LPNov 2023 · 7 co-filers Callpod, Inc.Nov 2022 · 5 co-filers Callpod, Inc.Nov 2021 · 15 co-filers Callpod, Inc.Dec 2020 · 15 co-filers Callpod, Inc.Sep 2020 · 15 co-filers$60.0M AMEX Holding I Corp.Jun 2020 · 23 co-filers$35.0M AMEX Holding I Corp.Jun 2019 · 23 co-filers$35.0M EMPIRE INDUSTRIES LTDJun 2019 · 22 co-filers$6.4M EMPIRE INDUSTRIES LTDAug 2017 · 15 co-filers$84K

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