Investor · St. Paul, MN

John J. Zentgraf

Open John in the network graph →

Filings

15

SEC Form D

Connections

108

co-filers

Capital

$5.6M

across filings

Active

Mar 2019

to Mar 2022

Most-connected co-filers (108)

Greg H. Maurer · Eden Prairie, MN9 shared James H. Baumgardt · Eden Prairie, MN9 shared John Seaberg · Plymouth, MN8 shared Jack K. Ahrens · Eden Prairie, MN7 shared Michael H. Dale · Eden Prairie, MN6 shared David H. Chung · St. Louis Park, MN6 shared Kyle Salyers · Minnetonka, MN5 shared Timothy Maudlin · Austin, TX5 shared James Hammock · Austin, TX4 shared M. J. Barrett · Chevy Chase, MD4 shared Peter B. Radekevich · Austin, TX4 shared Patrick Kerins · New York, NY4 shared Alexander Yevzlin · Minneapolis, MN4 shared Ryan Drant · Oakland, CA4 shared John K. Huesing · Eden Prairie, MN4 shared Michael Fulton · NOVI, MI4 shared Clark B. Jernigan · Austin, TX4 shared C. L. Ellis · Macon, GA3 shared Steven J. Healy · Minnetonka, MN3 shared Venkateswarlu A. Karicheti · Research Triangle Park, NC2 shared Daniel J. Ricca · Research Triangle Park, NC2 shared Tatyana A. Touzova · Research Triangle Park, NC2 shared Mary B. Katofiasc · Research Triangle Park, NC2 shared David Blumenthal · Southport, CT2 shared

Recent filings (15)

Phraxis Inc.Dec 2023 · 15 co-filers$7.7M Phraxis Inc.Dec 2023 · 15 co-filers$7.7M Phraxis Inc.Mar 2022 · 21 co-filers$4.5M Nitricap Medical Inc.Apr 2021 · 5 co-filers$5.0M Nitricap Medical Inc.Apr 2021 · 5 co-filers$5.0M Phraxis Inc.Mar 2019 · 13 co-filers$7.0M Phraxis Inc.Mar 2019 · 13 co-filers$7.0M NEOCHORD INCMay 2015 · 18 co-filers$20.0M Dignify Therapeutics, LLCFeb 2015 · 24 co-filers$3.4M NEOCHORD INCFeb 2015 · 18 co-filers$1.5M Repurpose, Inc.Oct 2014 · 10 co-filers$1.5M Dignify Therapeutics, LLCOct 2014 · 22 co-filers$3.0M Repurpose, Inc.Aug 2013 · 7 co-filers NEOCHORD INCJul 2011 · 13 co-filers$11.0M NEOCHORD INCJan 2011 · 13 co-filers$1.0M NEOCHORD INCJul 2009 · 15 co-filers$5.4M NEOCHORD INCJun 2009 · 14 co-filers$4.5M BUSINESS BANCSHARES, INC.May 2009 · 37 co-filers$5.0M

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