Investor · ARLINGTON, VA
John C. Backus
Open John in the network graph →Filings
304
SEC Form D
Connections
396
co-filers
Capital
$1.2B
across filings
Active
Sep 2014
to Nov 2025
Most-connected co-filers (396)
Thanasis F. Delistathis · ARLINGTON, VA155 sharedJohn F. Burke · RESTON, VA106 sharedPROOF Management, LLC · RESTON, VA88 sharedDylan Thuras · Brooklyn, NY49 sharedDaniel A. Shinar · Tel-Aviv, L346 sharedWilliam A. Shopoff · Irvine, CA46 sharedBrian J. Bayley · Vancouver, British Columbia, Canada46 sharedJonathan N. Kuhlman · Oklahoma City, OK46 sharedDavid Plotz · Brooklyn, NY44 sharedSpencer D. Laufer · COOPER CITY, FL42 sharedMichael J. Bailey · Edwardsville, IL39 sharedProof GP, LLC · RESTON, VA35 sharedJohn C. Backus, Jr · Reston, VA32 sharedMichael Flockenhaus · Fishers, IN30 sharedJames Sajor · BALTIMORE, MD30 sharedBharatt M. Chowrira · Cambridge, MA28 sharedLewis Geffen · BOSTON, MA28 sharedHeather R. Hill · Wilmington, DE26 sharedJason C. Menegakis · Wilmington, DE26 sharedWilliam A. Langan · Wilmington, DE26 sharedPatricia M. Karolyi · Wilmington, DE26 sharedJennifer A. Schretter · ARLINGTON, VA25 sharedJohn C. Backus Jr · RESTON, VA25 sharedBill Anderson · Los Angeles, CA22 shared
Recent filings (304)
PROOF IV HYHI LLCNov 2025 · 6 co-filers$928KPROOF IV GXAI LLCNov 2025 · 6 co-filers$420KPROOF III UMTI LLCOct 2025 · 6 co-filers$1.3MPROOF IV CDI LLCSep 2025 · 10 co-filers$2.0MPROOF III PAIL LLCSep 2025 · 6 co-filers$862KSilvercrest Jefferson Fund, Ltd.Sep 2025 · 11 co-filersPROOF III TGEI LLCJul 2025 · 6 co-filers$1.5MPROOF SIDE IV, LPJul 2025 · 9 co-filersPROOF Fund IV, LPJul 2025 · 9 co-filersPROOF III SHI LLCJul 2025 · 6 co-filers$446KPROOF III RVCI LLCJun 2025 · 6 co-filers$522KPROOF III TBOI LLCMay 2025 · 6 co-filers$662KPROOF III FHI LLCApr 2025 · 5 co-filers$597KPROOF III FHI LLCApr 2025 · 5 co-filers$597KPROOF II Oakhouse IB, LLCFeb 2025 · 9 co-filers$707KPROOF II Oakhouse IBQP, LLCFeb 2025 · 9 co-filers$2.2MPROOF III UDSI LLCFeb 2025 · 10 co-filers$929KPROOF III OWLI LLCDec 2024 · 10 co-filers$653KPROOF III AIR LLCDec 2024 · 10 co-filers$1.6MPROOF III OWLI LLCDec 2024 · 10 co-filers$653KNLV PROOF II BI, LLCDec 2024 · 7 co-filers$1.0MPROOF III AIR LLCDec 2024 · 10 co-filers$1.6MPROOF DPI3, LLCNov 2024 · 7 co-filers$1.8MPROOF III HLI LLCOct 2024 · 8 co-filers$3.2MSilvercrest Jefferson Fund, Ltd.Sep 2024 · 11 co-filers
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See John in the interactive graph →