Investor · Solana Beach, CA

Mark R. Spring

Open Mark in the network graph →

Filings

2

SEC Form D

Connections

35

co-filers

Capital

$3.7M

across filings

Active

Nov 2025

to Nov 2025

Most-connected co-filers (35)

Kenneth Buechler · San Diego, CA1 shared Bobby B. Kandaswamy · Provo, UT1 shared John M. Ramey Iii · Richmond, VA1 shared Connie Matsui · La Jolla, CA1 shared Steven M. Kelly · La Jolla, CA1 shared Gregory Gorgas · La Jolla, CA1 shared Douglas M. Blayney · La Jolla, CA1 shared R. M. Emanuele · La Jolla, CA1 shared Brian Shelton · Birmingham, AL1 shared Adam Waterous · Banff, Alberta, Canada1 shared Soraia Morais · London, United Kingdom1 shared Gregory R. Reyes · Solana Beach, CA1 shared Jason J. Kessler · Clifton, NJ1 shared Richard Kuntz · Cambridge, MA1 shared Ionnis J. Tsitos · Vancouver, British Columbia, Canada1 shared Michael Flynn · Hiram, GA1 shared Mark Schaftlein · Hiram, GA1 shared Matthew Armendariz · Calabasas, CA1 shared Andrew Kim · Toronto, Ontario, Canada1 shared David Swartz · Calabasas, CA1 shared Thomas House · Philadelphia, PA1 shared Albert Zimmerli · Minneapolis, MN1 shared Tamara A. Favorito · Solana Beach, CA1 shared Mario M. Covo · New York, NY1 shared

Recent filings (2)

ARTELO BIOSCIENCES, INC.Nov 2025 · 23 co-filers$3.7M ARTELO BIOSCIENCES, INC.Nov 2025 · 23 co-filers$3.7M Sotera Wireless, Inc.Apr 2014 · 14 co-filers$53.9M

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