Investor · El Segundo, CA

Arthur Karell

Open Arthur in the network graph →

Filings

4

SEC Form D

Connections

12

co-filers

Capital

$17.0M

across filings

Active

Dec 2024

to Jun 2025

Most-connected co-filers (12)

Jeffrey Osborne · El Segundo, CA2 shared John Malsbury · El Segundo, CA2 shared Ricardo A. Medina · El Segundo, CA2 shared First In Ventures Management, Inc · Hobe Sound, FL1 shared Forbes R. Mcpherson · Hobe Sound, FL1 shared First In Ventures 3 SBIC Critical Technologies LLC · Hobe Sound, FL1 shared First In Ventures Management, Inc · Hobe Sound, FL1 shared Brian Ni · Fullerton, CA1 shared A. Griffin Capital Company, Llc · El Segundo, CA1 shared Johnny Ni · Fullerton, CA1 shared David Byrd · El Segundo, CA1 shared Mark J. Suster · Santa Monica, CA1 shared

Recent filings (4)

Vanguard Defense, Inc.Mar 2026 · 2 co-filers$7.1M First In Ventures Fund 3 SBIC Critical Technologies LPOct 2025 · 7 co-filers First In Ventures Fund 3 SBIC Critical Technologies LPOct 2025 · 7 co-filers AnySignal, Inc.Jun 2025 · 5 co-filers$11.2M AnySignal, Inc.Dec 2024 · 5 co-filers$8.0M

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