Investor · Warrendale, PA

Stephen F. Badylak

Open Stephen in the network graph →

Filings

13

SEC Form D

Connections

54

co-filers

Capital

$111.7M

across filings

Active

Jan 2017

to Oct 2025

Most-connected co-filers (54)

Paul F. Fagan · Warrendale, PA10 shared Christine Sheehy · Wexford, PA9 shared George F. Hussey · Warrendale, PA9 shared Jami S. O'Toole · Cambridge, MA7 shared Jenna F. Dziki · Warrendale, PA7 shared Vinay S. Mohta · Cambridge, MA7 shared Douglas B. Wolf · Palm Beach Gardens, FL7 shared Edward S. Rayner · Cambridge, MA7 shared Romney Navarro · Austin, TX7 shared Herbert B. Stern · Palm Beach Gardens, FL7 shared Corey B. Siegel · Newton, MA7 shared Grady Collins · Austin, TX7 shared Peter Birch · Chatham, Ontario, Canada7 shared Katie F. Collins · Warrendale, PA7 shared Frank B. Peabody · Newton, MA7 shared Stephen S. Ramsthaler · New York, NY7 shared Erin S. Osborn · Cambridge, MA7 shared Gustavo B. Mahler · Vancouver, WA4 shared Brock T. Rush · San Antonio, TX4 shared Thomas E. Mcgrath · Denver, CO4 shared OneFund Investments, LLC · San Francisco, CA4 shared Lindsey F. Saldin · Warrendale, PA4 shared Sean Mcclain · Vancouver, WA3 shared Jeremy A. Carr · San Antonio, TX3 shared

Recent filings (13)

ECM Therapeutics, Inc.Oct 2025 · 20 co-filers$40.0M ECM Therapeutics, Inc.May 2024 · 20 co-filers$30.0M ECM Therapeutics, Inc.Jun 2023 · 20 co-filers$25.0M ECM Therapeutics, Inc.Sep 2022 · 20 co-filers$20.0M ECM Therapeutics, Inc.Jul 2021 · 17 co-filers$15.0M ECM Therapeutics, Inc.Jun 2019 · 17 co-filers$5.0M PhyzData Healthcare Solutions, LLCDec 2018 · 9 co-filers$2.5M ECM Therapeutics, Inc.Jun 2018 · 17 co-filers$5.0M PhyzData Healthcare Solutions, LLCJun 2018 · 4 co-filers$2.5M 7eVn, LLCJun 2018 · 5 co-filers$1 AUTONET MOBILE INCAug 2017 · 14 co-filers$1.6M AUTONET MOBILE INCJan 2017 · 28 co-filers$5.0M PhyzData, LLCJan 2017 · 9 co-filers$10.5M

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