Investor · Shullsburg, WI

Stephan Byrne

Open Stephan in the network graph →

Filings

10

SEC Form D

Connections

29

co-filers

Capital

$11.3M

across filings

Active

Jul 2022

to Aug 2025

Most-connected co-filers (29)

Randy Groth · Cedarburg, WI8 shared Martin A. Kessi · ST HELIER, Y94 shared Callum Renault · St. Helier, Y94 shared Ernestine F. Mak · San Rafael, CA4 shared Michael G. Hassan · Toronto, Ontario, Canada4 shared Michelle A. Mcnaney · ST HELIER, Y94 shared John Dunfee · Cedarburg, WI4 shared Adam A. Bocus · St. Helier, Y94 shared Christopher W. Le Boutillier · ST HELIER, Y94 shared Mauricio Trujillo · New York, NY2 shared Stella Cannefax · New York, NY2 shared Thomas Nye · Cedarburg, WI2 shared Michael Staub · New York, NY2 shared Chandra Holt · Hillsboro, OR2 shared Raino A. Saari · Singapore, U02 shared Anders Sylven · STOCKHOLM, V72 shared Thomas Sipos · STOCKHOLM, V72 shared John Palmer · Arlington, VA2 shared Grey Rock Net Zero Opportunities Fund I GP, LP · DALLAS, TX2 shared Grip Energy Transition Management, LLC · DALLAS, TX2 shared Martin Mcclanan · HILLSBORO, OR2 shared Jeffrey Cantalupo · Chicago, IL2 shared Thad Darden · Dallas, TX2 shared Matt Miller · Dallas, TX2 shared

Recent filings (10)

TBFC Allenton Holdings, LLCAug 2025 · 11 co-filers$3.0M TBFC Allenton Holdings, LLCAug 2025 · 11 co-filers$3.0M Search On Dora Inc.Jun 2024 · 5 co-filers$355K Search On Dora Inc.Jun 2024 · 5 co-filers$3.5M TBFC Monroe Holdings, LLCJun 2024 · 11 co-filers$8.2M TBFC Monroe Holdings, LLCJun 2024 · 11 co-filers$8.2M ASF IX L.P.Sep 2023 · 10 co-filers ASF IX B L.P.Sep 2023 · 10 co-filers GREY ROCK NET ZERO OPPORTUNITIES FUND I, LPJul 2023 · 15 co-filers$600.0M ASF IX B L.P.Aug 2022 · 10 co-filers ASF IX L.P.Aug 2022 · 10 co-filers GREY ROCK NET ZERO OPPORTUNITIES FUND I, LPJul 2022 · 15 co-filers$600.0M

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