Investor · New York, NY

Antoine Papiernik

Open Antoine in the network graph →

Filings

47

SEC Form D

Connections

307

co-filers

Capital

$475.1M

across filings

Active

Jan 2010

to Sep 2025

Most-connected co-filers (307)

Jay H. Watkins · Fremont, CA10 shared Eric Rowinsky · Tel Aviv, L310 shared Raymond Camahort · SAN FRANCISCO, CA7 shared Todd J. Brinton · Fremont, CA7 shared Jue Pu · New York, NY7 shared Colin H. Cahill · Fremont, CA7 shared Jack Nielsen · New York, NY7 shared Dan Sachs · Maple Grove, MN6 shared Dieter Weinand · Houston, TX5 shared David Darst · New York, NY5 shared Daniel Hawkins · Fremont, CA5 shared Peter V. Van Vlasselaer · South San Francisco, CA5 shared Masoud Tavazoie · New York, NY5 shared Ben Pershick · Grand Cayman, Cayman Islands5 shared Jay Watkins · HAYWARD, CA4 shared Samuel Mazin · HAYWARD, CA4 shared Frederic H. Moll · Fremont, CA4 shared Michael Ginder · New York, NY4 shared Fred Moll · San Jose, CA4 shared Isaac Zacharias · Santa Clara, CA4 shared Dan H. Puckett · Fremont, CA4 shared Frank Litvack · Beverly Hills, CA4 shared B. K. Johnson · Minneapolis, MN4 shared Fred Moll · San Jose, CA4 shared

Recent filings (47)

Galvanize Therapeutics, Inc.Sep 2025 · 13 co-filers$141.1M Galvanize Therapeutics, Inc.Sep 2025 · 13 co-filers$141.1M Sofinnova Capital XI SCSP SICAV-RAIFNov 2024 · 12 co-filers Inspirna, Inc.Aug 2022 · 29 co-filers$55.1M Inspirna, Inc.Jul 2022 · 29 co-filers$47.2M ZAP ENERGY, INC.Jul 2022 · 23 co-filers$162.6M ZAP ENERGY, INC.Jun 2022 · 23 co-filers$160.6M RefleXion Medical, Inc.Mar 2022 · 43 co-filers$110.0M RefleXion Medical, Inc.Mar 2022 · 43 co-filers$110.0M ZAP ENERGY, INC.Apr 2021 · 20 co-filers$27.5M Mitesco, Inc.Apr 2021 · 17 co-filers$2.0M Mitesco, Inc.Apr 2021 · 17 co-filers$3.0M Rgenix, Inc.Feb 2021 · 19 co-filers$11.0M Rgenix, Inc.Feb 2021 · 19 co-filers$11.0M RefleXion Medical, Inc.Apr 2020 · 19 co-filers$125.0M RefleXion Medical, Inc.Apr 2020 · 19 co-filers$125.0M Partners Capital Condor Fund XI (Cayman), L.P.Apr 2019 · 11 co-filers$238.2M ShockWave Medical, Inc.Mar 2019 · 24 co-filers$10.0M ShockWave Medical, Inc.Dec 2018 · 24 co-filers$15.7M Rgenix, Inc.Oct 2018 · 15 co-filers$39.8M Rgenix, Inc.Oct 2018 · 15 co-filers$39.8M Partners Capital Condor Fund XI (Cayman), L.P.Apr 2018 · 11 co-filers RefleXion Medical, Inc.Apr 2018 · 15 co-filers$102.6M RefleXion Medical, Inc.Apr 2018 · 15 co-filers$102.6M ShockWave Medical, Inc.Oct 2017 · 19 co-filers$80.0M

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