Investor · Portland, OR

John P. Campbell

Open John in the network graph →

Filings

14

SEC Form D

Connections

49

co-filers

Capital

$2.1M

across filings

Active

Apr 2023

to Oct 2025

Most-connected co-filers (49)

Degang P. Wang · Portland, OR11 shared Karyn P. Jonas · Portland, OR9 shared Robison Vernon P. Paul Chan · Portland, OR7 shared Tong P. Sun · Portland, OR7 shared U.S. Realty Advisors, LLC · New York, NY5 shared David Silvers · New York, NY5 shared U.S. Realty Advisors, LLC · New York, NY5 shared Hollis N. Gieger · Birmingham, AL5 shared Andrew Harris · New York, NY5 shared David Grazioli · New York, NY5 shared Michael J. Benjamin · Farmington, UT4 shared Steven S. Benjamin · Farmington, UT4 shared Gerald A. Beeson · CHICAGO, IL4 shared Mark Wilkerson · Farmington, UT3 shared Alexander M. Vos · Hollister, CA2 shared Damon Terrill · Hollister, CA2 shared Jeff Banghart · Tabor, IA2 shared John M. Mackowski · Hollister, CA2 shared Irene Davis · Hollister, CA2 shared Jason Blackburn · Tabor, IA2 shared Lori Webb-Griffith · GRAND CAYMAN, Cayman Islands2 shared Mark A. Watne · JAMESTOWN, ND2 shared Michelle J. Ziesch · PETTIBONE, ND2 shared Robert J. Finken · DOUGLAS, ND2 shared

Recent filings (14)

Siloam Vision, Inc.Jan 2026 · 3 co-filers$700K Siloam Vision, Inc.Oct 2025 · 10 co-filers$745K Siloam Vision, Inc.Oct 2025 · 11 co-filers$1.1M Siloam Vision, Inc.Oct 2025 · 11 co-filers$1.1M Siloam Vision, Inc.Oct 2025 · 14 co-filers$550K Siloam Vision, Inc.Oct 2025 · 14 co-filers$550K Siloam Vision, Inc.Oct 2025 · 14 co-filers$500K Siloam Vision, Inc.Oct 2025 · 14 co-filers$500K Siloam Vision, Inc.Oct 2025 · 10 co-filers$745K USRA Institutional Net Lease Fund V LLCJul 2025 · 10 co-filers 1370 USRA Net Lease Fund V LLCJul 2025 · 10 co-filers 299 USRA Net Lease Fund V LLCJul 2025 · 10 co-filers 1345 USRA Net Lease Fund V LLCJul 2025 · 10 co-filers USRA Net Lease V Capital Corp.Jul 2025 · 10 co-filers Alpha Teknova, Inc.Jul 2024 · 38 co-filers$20.9M Alpha Teknova, Inc.Sep 2023 · 38 co-filers$20.9M Hellcat Technologies, Inc.Aug 2023 · 8 co-filers$250K Hellcat Technologies, Inc.Apr 2023 · 8 co-filers$150K

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