Investor · San Antonio, TX
James W. Deyoung
Open James in the network graph →Filings
20
SEC Form D
Connections
53
co-filers
Capital
$10.6M
across filings
Active
Sep 2011
to Nov 2022
Most-connected co-filers (53)
David J. Kazynski · San Antonio, TX15 sharedL. P. Smith · San Antonio, TX14 sharedJim Walsh · San Antonio, TX8 sharedRobert Lundy · Hayward, CA7 sharedMichael C. Wells · San Antonio, TX7 sharedJim Donnelly · Hayward, CA7 sharedJoseph W. Moffett · San Antonio, TX7 sharedSteve Johnson · Hayward, CA7 sharedSusan Mason · Santa Clara, CA7 sharedJoseph S. Pergolizzi · Palo Alto, CA5 sharedJohn Ballard · Littleton, CO5 sharedDavid Rosenbaum · CHICAGO, IL5 sharedAdam D. Cutler · Austin, TX5 sharedRobert T. Brennan · Boston, MA5 sharedDavid R. Hoffmann · Austin, TX5 sharedBradley W. Hannah · CHICAGO, IL4 sharedTony M. Alexander · Dayton, OH4 sharedTed M. Buchter · San Antonio, TX4 sharedRyan J. Mcintyre · Boulder, CO4 sharedRobert C. Ketterson · Boston, MA4 sharedHarold Selick · South San Francisco, CA4 sharedBaha Yildirim · Irvine, CA3 sharedHoward Mendelsohn · SEATTLE, WA3 sharedMatthew A. Graver · West Conshohocken, PA3 shared
Recent filings (20)
QUANTUM RIDGE CAPITAL PARTNERS, L.P.Dec 2025 · 2 co-filersQUANTUM RIDGE CAPITAL PARTNERS, L.P.Jul 2025 · 2 co-filersELECTROCHEMICAL OXYGEN CONCEPTS INCNov 2022 · 13 co-filers$370KELECTROCHEMICAL OXYGEN CONCEPTS INCJan 2021 · 14 co-filers$500KELECTROCHEMICAL OXYGEN CONCEPTS INCJan 2021 · 14 co-filers$500KELECTROCHEMICAL OXYGEN CONCEPTS INCAug 2020 · 14 co-filers$500KELECTROCHEMICAL OXYGEN CONCEPTS INCMay 2018 · 14 co-filers$8.7MVitality Health Plans, Inc.Jan 2018 · 7 co-filers$4.5MVitality Health Plans, Inc.Oct 2017 · 8 co-filers$7.0MMAC MAC, Inc.Jun 2017 · 19 co-filers$1.5MVitality Health Plans, Inc.Jun 2017 · 8 co-filers$8.3MMAC MAC, Inc.Jan 2013 · 12 co-filers$1.5MMAC MAC, Inc.Sep 2011 · 12 co-filers$1.8MELECTROCHEMICAL OXYGEN CONCEPTS INCOct 2010 · 9 co-filers$2.5MELECTROCHEMICAL OXYGEN CONCEPTS INCOct 2010 · 9 co-filers$2.5MELECTROCHEMICAL OXYGEN CONCEPTS INCOct 2010 · 9 co-filers$2.5MELECTROCHEMICAL OXYGEN CONCEPTS INCAug 2009 · 9 co-filers$705KELECTROCHEMICAL OXYGEN CONCEPTS INCJun 2009 · 9 co-filers$733KELECTROCHEMICAL OXYGEN CONCEPTS INCApr 2009 · 9 co-filers$243KELECTROCHEMICAL OXYGEN CONCEPTS INCDec 2008 · 9 co-filers$500K
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See James in the interactive graph →