Investor · Coralville, IA

Greg Carstensen

Open Greg in the network graph →

Filings

13

SEC Form D

Connections

23

co-filers

Capital

$6.7M

across filings

Active

Apr 2022

to Nov 2025

Most-connected co-filers (23)

Daniel Clay · Coralville, IA7 shared Scott E. Keplinger · Clive, IA7 shared Richard Ferguson · Coralville, IA7 shared Lee Goehring · Washington, Washington, D.C.4 shared Gregory G. Carstensen · West Des Moines, IA4 shared Adam Palmer · WASHINGTON, Washington, D.C.4 shared Michael Kukuselis · Columbia, MD4 shared Mike Gozycki · Washington, Washington, D.C.4 shared Mark Clermont · NEW YORK, NY3 shared Regina Reale · NEW YORK, NY3 shared Dylan Marma · Tampa, FL3 shared John Ivey · Coralville, IA3 shared Sheryl A. Kingsberg · Salt Lake City, UT3 shared Saul M. Richter · Philadelphia, PA3 shared Cody Nystrom · Durham, NC3 shared Frank Cardia · ISELIN, NJ3 shared Eric J. Edidin · Beverly Hills, CA3 shared Charles E. Garner Ii · Los Angeles, CA3 shared Brad N. Marshall · New York, NY3 shared David G. Weingard · New York, NY3 shared Brad G. Wilson · New York, NY3 shared Jeffrey Becker · NEW YORK, NY3 shared Mike Goedken · Coralville, IA1 shared

Recent filings (13)

MALUM, INC.Nov 2025 · 14 co-filers$2.8M MALUM, INC.Apr 2025 · 16 co-filers$5.0M MALUM, INC.Mar 2025 · 14 co-filers$600K Cecelia Health Holdings, Inc.Apr 2024 · 23 co-filers$15.0M Cecelia Health Holdings, Inc.Mar 2024 · 23 co-filers$4.0M MALUM, INC.Dec 2023 · 11 co-filers$6.0M Cecelia Health Holdings, Inc.Jul 2023 · 23 co-filers$3.5M

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