Investor · Reston, VA
John C. Backus, Jr
Open John in the network graph →Filings
43
SEC Form D
Connections
70
co-filers
Capital
$4.7M
across filings
Active
Dec 2019
to Jul 2021
Most-connected co-filers (70)
Thanasis F. Delistathis · ARLINGTON, VA36 sharedJohn C. Backus · ARLINGTON, VA32 sharedPROOF Management, LLC · RESTON, VA31 sharedJohn F. Burke · RESTON, VA28 sharedAngilynn M. Baraud · CAMANA BAY, GRAND CAYMAN, Cayman Islands8 sharedProof GP, LLC · RESTON, VA5 sharedRodolfo Gonzalez · Palo Alto, CA3 sharedPatricia A. Bradford · Marlborough, MA3 sharedClayton Yates · HENDERSON, NV3 sharedJesse Jaynes · HENDERSON, NV3 sharedJoanne Chen · San Francisco, CA3 sharedChad Pawlak · HENDERSON, NV3 sharedCurtis A. Lockshin, Ph.D · Marlborough, MA3 sharedRobert A. Ferrara · Marlborough, MA3 sharedRobert J. Bitterman · Marlborough, MA3 sharedJonathan A. Freeman · Marlborough, MA3 sharedRobert A. Infarinato · Marlborough, MA3 sharedJohn H. Foster · New York, NY2 sharedFrank Hourigan · New York, NY2 sharedGary D. Stevenson · Memphis, TN2 sharedConstance C. Norman · Vancouver, British Columbia, Canada2 sharedFelipe Sommer · Dania Beach, FL2 sharedPeter Segall · New York, NY2 sharedDerek Kim · CHEYENNE, WY2 shared
Recent filings (43)
PROOF IV GXAI LLCNov 2025 · 6 co-filers$420KPROOF IV HYHI LLCNov 2025 · 6 co-filers$928KPROOF III PAIL LLCSep 2025 · 6 co-filers$862KPROOF IV CDI LLCSep 2025 · 10 co-filers$2.0MPROOF Fund IV, LPJul 2025 · 9 co-filersPROOF SIDE IV, LPJul 2025 · 9 co-filersPROOF III TGEI LLCJul 2025 · 6 co-filers$1.5MPROOF III RVCI LLCJun 2025 · 6 co-filers$522KPhio Pharmaceuticals Corp.Jan 2025 · 17 co-filers$5.0MPhio Pharmaceuticals Corp.Jan 2025 · 17 co-filers$3.7MPhio Pharmaceuticals Corp.Jan 2025 · 17 co-filers$480KNLV PROOF II BI, LLCDec 2024 · 7 co-filers$1.0MPROOF AVC2, LLCApr 2024 · 8 co-filers$644KPROOF AVC2, LLCApr 2024 · 8 co-filers$644KPROOF II Javelin CH, LLCJan 2023 · 6 co-filers$768KPROOF II Oakhouse IBQP, LLCFeb 2022 · 6 co-filers$3.5MPROOF II LI, LLCAug 2021 · 9 co-filers$957KPROOF II LI, LLCAug 2021 · 9 co-filers$957KPROOF II TBP, LLCJul 2021 · 6 co-filers$1.1MPROOF II Javelin FITI, LLCJul 2021 · 6 co-filers$4.0MPROOF II Javelin CH, LLCJul 2021 · 6 co-filers$4.3MPROOF II Oakhouse IBQP, LLCJul 2021 · 6 co-filers$7.2MCRES Holdings, Inc.Jul 2021 · 16 co-filers$5.0MPROOF II Javelin MGI, LLCJun 2021 · 6 co-filers$1.7MPROOF II MGI, LLCMay 2021 · 6 co-filers$1.7M
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See John in the interactive graph →