Investor · Norfolk, VA

Mark Dumas

Open Mark in the network graph →

Filings

133

SEC Form D

Connections

280

co-filers

Capital

$62.7M

across filings

Active

Mar 2024

to Mar 2026

Most-connected co-filers (280)

Aaron Berkey · Norfolk, VA104 shared Jason Parikh · Norfolk, VA102 shared Shap Bashar · Norfolk, VA98 shared Okeanos Venture Management Llc · Norfolk, VA92 shared Okeanos Venture Management Llc · Great Falls, VA81 shared Okeanos Venture Management Llc · Great Falls, VA81 shared Robert J. Edwards · McLean, VA19 shared Denis R. Clements · McLean, VA19 shared Matt R. Priester · McLean, VA15 shared William Roberts · Grand Cayman, Cayman Islands13 shared Desmond Murray · Grand Cayman, Cayman Islands13 shared Paul Freeman · Grand Cayman, Cayman Islands13 shared Thomas Nummer · Grand Cayman, Cayman Islands13 shared Robert A. Smith · McLean, VA11 shared Mark R. Giaconia · McLean, VA11 shared Jim R. Stokes · McLean, VA11 shared Brad J. Kniejski · McLean, VA11 shared R. Bashar · Norfolk, VA10 shared William J. Lilley, Iii · McLean, VA9 shared Alan N. Solon · Atlanta, GA8 shared Adam C. Lloyd · Atlanta, GA8 shared George R. Declerk · Springdale, AR8 shared Jed C. Linsider · Atlanta, GA8 shared Andrew J. Lindner · McLean, VA8 shared

Recent filings (133)

OKEANOS VENTURE PARTNERS II LLC-SERIES 175Mar 2026 · 4 co-filers$516K OKEANOS VENTURE PARTNERS II LLC-SERIES 174Mar 2026 · 4 co-filers$370K OKEANOS VENTURE PARTNERS II LLC-SERIES 173Mar 2026 · 4 co-filers$1.0M OKEANOS VENTURE PARTNERS II LLC-SERIES 172Mar 2026 · 4 co-filers$764K OKEANOS VENTURE PARTNERS II LLC-SERIES 171Feb 2026 · 4 co-filers$255K OKEANOS VENTURE PARTNERS II LLC-SERIES 170Feb 2026 · 4 co-filers$514K OKEANOS VENTURE PARTNERS II LLC-SERIES 169Feb 2026 · 4 co-filers$480K OKEANOS VENTURE PARTNERS II LLC-SERIES 168Jan 2026 · 4 co-filers$1.6M Inverness Graham Investments V, L.P.Jan 2026 · 9 co-filers Okeanos Venture Partners II, LLC - Series 165Jan 2026 · 4 co-filers$723K Okeanos Venture Partners I, LLC - Series 96Jan 2026 · 4 co-filers$7K OKEANOS VENTURE PARTNERS II LLC-SERIES 167Jan 2026 · 4 co-filers$273K Okeanos Venture Partners II, LLC - Series 166Dec 2025 · 7 co-filers$1.6M Okeanos Venture Partners I, LLC - Series 98Dec 2025 · 7 co-filers$7K Okeanos Venture Partners I, LLC - Series 102Nov 2025 · 7 co-filers$14K Okeanos Venture Partners II, LLC - Series 163Nov 2025 · 7 co-filers$4.2M Okeanos Venture Partners II, LLC - Series 164Nov 2025 · 7 co-filers$543K Okeanos Venture Partners II, LLC - Series 161Oct 2025 · 7 co-filers$277K Okeanos Venture Partners II, LLC - Series 162Oct 2025 · 7 co-filers$956K OKEANOS VENTURE PARTNERS II LLC-SERIES 159Oct 2025 · 7 co-filers$155K OKEANOS VENTURE PARTNERS II LLC-SERIES 158Oct 2025 · 7 co-filers$573K OKEANOS VENTURE PARTNERS II LLC-SERIES 160Oct 2025 · 7 co-filers$416K CSS MH 2025-1 Topco Aggregator L.L.C.Sep 2025 · 10 co-filers OKEANOS VENTURE PARTNERS II LLC-SERIES 156Sep 2025 · 7 co-filers$2.3M OKEANOS VENTURE PARTNERS II LLC-SERIES 157Sep 2025 · 7 co-filers$1.1M

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