Investor · St. Louis, MO

Samuel W. Duggan, Ii

Open Samuel in the network graph →

Filings

9

SEC Form D

Connections

83

co-filers

Capital

$85.5M

across filings

Active

Jun 2020

to Oct 2025

Most-connected co-filers (83)

Winthrop B. Reed, Iii · St. Louis, MO7 shared Amy B. Stone · St. Louis, MO7 shared Cheryl D. Walker · St. Louis, MO5 shared Rahul D. Advani · Redwood City, CA4 shared Jordan Amyx · Dallas, TX4 shared Elyse P. Winer · Boston, MA4 shared George Whitesides · Cambridge, MA4 shared Sara Graziano · Belmont, CA4 shared Christopher Smith · Belmont, CA4 shared Marvin R. Wooten Jr · Belmont, CA4 shared John Holland · Sausalito, CA4 shared Dan Krasner · Sausalito, CA4 shared Huiting B. Zhuang · North Providence, RI3 shared Orvin T. Kimbrough · St. Louis, MO3 shared Tracy E. Hart · St. Louis, MO3 shared Marsha K. Benney · St. Louis, MO3 shared Simon G. Edwards · Grand Cayman, Cayman Islands3 shared Brian Adamsky · Radnor, PA3 shared Brian K. Humes · St. Louis, MO3 shared Deanna J. Derrick · GRAND CAYMAN, Cayman Islands3 shared Michael Azeez · Radnor, PA3 shared Christopher J. Ackerman · CHICAGO, IL3 shared Chris K. Krehmeyer · St. Louis, MO3 shared Johnny S. Wang · St. Louis, MO3 shared

Recent filings (9)

Midwest BankCentre, Inc.Oct 2025 · 54 co-filers$50.0M Midwest BankCentre, Inc.Apr 2025 · 58 co-filers$10.0M SER Efficiency Fund I, LPAug 2021 · 13 co-filers Mount Curve Equity Fund LPJun 2021 · 2 co-filers Midwest BankCentre, Inc.Jun 2021 · 51 co-filers$35.0M SER Capital Partners I, LPJan 2021 · 13 co-filers SER Storage Fund II, LPOct 2020 · 16 co-filers SER Perfect Power Solutions Fund I, LPJun 2020 · 16 co-filers Mount Curve Equity Fund LPJun 2020 · 2 co-filers

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