Investor · Atlanta, GA

Martin E. Granbow

Open Martin in the network graph →

Filings

4

SEC Form D

Connections

41

co-filers

Capital

—

across filings

Active

Feb 2009

to Jan 2026

Most-connected co-filers (41)

David Saska · Toronto, Ontario, Canada4 shared Kent M. Wells · Atlanta, 2Q4 shared Rick L. Moore · Atlanta, GA4 shared Carolyn J. Wilder · Atlanta, GA4 shared Paul H. Stevenson · Hamilton, Bermuda2 shared Sonja A. Commer · SAN FRANCISCO, CA2 shared Scott B. Schaefer · Seattle, WA2 shared James M. Johnston · Spokane, WA2 shared Martin P. Klitzner · Solana Beach, CA2 shared Ernest H. Pomerantz · New York, NY2 shared Frank Brochin · New York, NY2 shared Ralph B. De La Vega · New York, NY2 shared Seth W. Chandler · San Francisco, CA2 shared Walter E. Niemasik, Jr · San Francisco, CA2 shared Judy Halaby · New York, NY2 shared George E. Klingelhofer · San Francisco, CA2 shared John H. Santoleri · New York, NY2 shared Jonathan Aborn · New York, NY2 shared John Marshall · San Francisco, CA2 shared Raj D. Venkatesan · Road Town, Tortola, British Virgin Islands2 shared John Stankey · Atlanta, GA2 shared Richard G. Linder · Atlanta, GA2 shared Peter A. Richter · Atlanta, GA2 shared Nicky W. Jones · Atlanta, GA2 shared

Recent filings (4)

Blue Spark Energy Systems Inc.Jan 2026 · 4 co-filers$2.4M Blue Spark Energy Systems Inc.Dec 2025 · 14 co-filers$20.2M Cincinnati SMSA Limited PartnershipFeb 2009 · 37 co-filers$945K Cincinnati SMSA Limited PartnershipFeb 2009 · 37 co-filers$945K

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