Investor · San Francisco, CA

Mark Johnson

Open Mark in the network graph →

Filings

182

SEC Form D

Connections

568

co-filers

Capital

$110.3M

across filings

Active

Aug 2009

to Oct 2025

Most-connected co-filers (568)

Sean M. Banks · Atlanta, GA41 shared Matthew Ramirez · Berkeley, CA25 shared Gardiner W. Garrard Iii · Atlanta, GA23 shared Steven H. Cohen · Pittsburgh, PA19 shared Joan Herbig · Alpharetta, GA15 shared Tom Roberts · Richmond, VA13 shared Jack Mcdonnell · Alpharetta, GA11 shared Ronald Percival · Westport, CT10 shared Robert S. Chalmers · Chico, CA10 shared Neil A. Kapur · Atlanta, GA10 shared Edgardo C. Nazario · Alpharetta, GA9 shared Craig H. Solomon · New York, NY9 shared Jeffrey B. Citrin · New York, NY9 shared Tomcat Advisors, L.L.C · Fort Worth, TX9 shared Carson Yost · FORT WORTH, TX9 shared William M. Zuga · Lutherville, MD8 shared Brad Levie · New York, NY8 shared Robert C. Getts · Hatfield, PA8 shared Donald Layden, Jr · Boston, MA7 shared Devon Kinkead · Boston, MA7 shared Joseph Heller · Boston, MA7 shared Brian S. Jacobs · San Mateo, CA7 shared Kathryn Hinderhofer · Boston, MA7 shared Jeffrey C. Lunsford · Alpharetta, GA7 shared

Recent filings (182)

Ekotrope, Inc.Oct 2025 · 9 co-filers$11.0M Ekotrope, Inc.Oct 2025 · 9 co-filers$11.0M Foro Holdings, Inc.Jul 2025 · 10 co-filers$10.0M Foro Holdings, Inc.Jul 2025 · 10 co-filers$10.0M Guardian Storage Grand Junction, LLCMay 2025 · 2 co-filers$4.9M Micronotes, Inc.Oct 2024 · 5 co-filers$1.5M Clearsense, IncSep 2024 · 28 co-filers$12.5M LUZ Capital Partners, LLCSep 2024 · 28 co-filers$920K TTV Scratch Opportunity Investment Fund II, LPAug 2024 · 13 co-filers$1.1M TTV Koho Opportunity Investment Fund II, LPAug 2024 · 13 co-filers$900K TTV Koho Opportunity Investment Fund II, LPAug 2024 · 13 co-filers$900K TTV Scratch Opportunity Investment Fund II, LPAug 2024 · 13 co-filers$1.1M DefenseStorm, Inc.Apr 2024 · 26 co-filers$12.0M Guardian Storage Louisville, LLCJan 2024 · 2 co-filers$6.5M Legacy Security Fund I, LLCOct 2023 · 17 co-filers$150.0M TTV Koho Opportunity Investment Fund, LPAug 2023 · 9 co-filers$4.0M TTV Koho Opportunity Investment Fund, LPAug 2023 · 9 co-filers$4.0M Guardian Storage Morgantown, LLCJul 2023 · 2 co-filers$3.7M Solas BioVentures Emerging Healthcare Fund, LPMay 2023 · 14 co-filers Micronotes, Inc.May 2023 · 9 co-filers$2.1M Preferred Partner Community, LLCApr 2023 · 9 co-filers Preferred Partner Community, LLCApr 2023 · 9 co-filers Foro Holdings, Inc.Mar 2023 · 7 co-filers$4.0M Foro Holdings, Inc.Mar 2023 · 7 co-filers$4.0M TTV Fund VI, L.P.Feb 2023 · 13 co-filers$250.0M

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