Investor · Morristown, NJ

Mark Theeuwes

Open Mark in the network graph →

Filings

20

SEC Form D

Connections

147

co-filers

Capital

$222.4M

across filings

Active

Jul 2022

to Dec 2025

Most-connected co-filers (147)

Ansbert Gadicke · New Brighton, MN14 shared Gregory Mayes · Morristown, NJ11 shared Ellen Lubman · Morristown, NJ10 shared Natalie Sacks · Morristown, NJ8 shared Jacob H. Tetlow · Phoenix, AZ7 shared Blake P. Conner · Miami, FL7 shared Adam C. Heflin · Phoenix, AZ7 shared Allen Parker · New York, NY7 shared Jianming Ma · Grand Cayman, Cayman Islands7 shared Richard Willis · New York, NY7 shared Marc S. Lipschultz · NEW YORK, NY7 shared Amber R. Ramsey · George Town, Grand Cayman, Cayman Islands7 shared Wade D. Norris · Great Falls, VA7 shared David Hart · New York, NY7 shared Petrus J. Pretorius · Tzaneen, T37 shared ALE Capital LLC · Dublin, OH7 shared Ham K. Serunjogi · Menlo Park, CA7 shared Glynis A. Bryan · Phoenix, AZ7 shared Andrew D. Cooper · Phoenix, AZ7 shared Theodore N. Geisler · Phoenix, AZ7 shared Brian Greenfield · Boston, MA7 shared Paula J. Sims · Phoenix, AZ7 shared Tzafrir Shahar · Walnut, CA7 shared Richard P. Fox · Phoenix, AZ7 shared

Recent filings (20)

PINNACLE WEST CAPITAL CORPDec 2025 · 48 co-filers Reunion Neuroscience, Inc.Sep 2025 · 29 co-filers$119.8M Reunion Neuroscience, Inc.Sep 2025 · 29 co-filers$119.8M Cascadia Minerals Ltd.Jul 2025 · 25 co-filers$284K Reunion Neuroscience, Inc.May 2025 · 29 co-filers$89.8M Reunion Neuroscience, Inc.May 2025 · 29 co-filers$89.8M Cascadia Minerals Ltd.May 2025 · 28 co-filers$156K PINNACLE WEST CAPITAL CORPJan 2025 · 57 co-filers Cascadia Minerals Ltd.Jan 2025 · 32 co-filers$186K Cascadia Minerals Ltd.May 2024 · 32 co-filers$156K Reunion Neuroscience Management, Inc.May 2024 · 27 co-filers$89.8M Reunion Neuroscience Management, Inc.May 2024 · 27 co-filers$89.8M Cascadia Minerals Ltd.Apr 2024 · 32 co-filers$92K Reunion Neuroscience Management, Inc.Jan 2024 · 17 co-filers$66.8M Reunion Neuroscience Management, Inc.Jan 2024 · 17 co-filers$66.8M PINNACLE WEST CAPITAL CORPJan 2024 · 51 co-filers PINNACLE WEST CAPITAL CORPMar 2023 · 58 co-filers PINNACLE WEST CAPITAL CORPMar 2023 · 58 co-filers PINNACLE WEST CAPITAL CORPFeb 2023 · 55 co-filers GSV SL, L.P.Dec 2022 · 7 co-filers GSV CH III, L.P.Jul 2022 · 7 co-filers$5.0M PINNACLE WEST CAPITAL CORPJul 2022 · 58 co-filers RECEPTOR HOLDINGS, INC.Dec 2021 · 17 co-filers$10.0M RECEPTOR HOLDINGS, INC.Dec 2021 · 17 co-filers$10.0M Engage Therapeutics, Inc.Oct 2019 · 22 co-filers$12.0M

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