Investor · Boulder, CO

Douglas Chapnick

Open Douglas in the network graph →

Filings

8

SEC Form D

Connections

15

co-filers

Capital

$1.2M

across filings

Active

Feb 2018

to May 2021

Most-connected co-filers (15)

Keith S. Greenfield · Boston, MA2 shared David R. Elmaleh · Boston, MA2 shared Sandeep Laumas · Raleigh, NC2 shared Jay P. Madan · Raleigh, NC2 shared Khalid Iton · Grand Cayman, Cayman Islands2 shared Christopher Prior · Raleigh, NC2 shared James Asher · Cleveland, OH2 shared Steven Feldman · Cleveland, OH2 shared Simon C. Krinsky · SAN FRANCISCO, CA2 shared Rory Wallace · New York, NY2 shared William V. Barker · Laguna Beach, CA2 shared Scott P. Dover · Miami, FL2 shared John A. Allison · PRINCETON, NJ2 shared Nicholas M. Saccomano · Boulder, CO2 shared Joel A. Dudley · Boulder, CO2 shared

Recent filings (8)

BioLoomics, Inc.Nov 2025 · 5 co-filers$2.0M BioLoomics, Inc.Nov 2025 · 5 co-filers$2.0M BioLoomics, Inc.Mar 2023 · 5 co-filers$10.0M BioLoomics, Inc.Mar 2023 · 5 co-filers$10.0M BioLoomics, Inc.May 2021 · 2 co-filers$575K BioLoomics, Inc.Jun 2019 · 2 co-filers$600K WestonOx Fund, LLCOct 2018 · 5 co-filers$30.0M IB Pharmaceuticals Inc.Feb 2018 · 7 co-filers$36.3M IB Pharmaceuticals Inc.Feb 2018 · 7 co-filers$4.8M WestonOx Fund, LLCFeb 2018 · 5 co-filers$30.0M

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