Investor · Ann Arbor, MI

Brook V. Critchfield

Open Brook in the network graph →

Filings

30

SEC Form D

Connections

151

co-filers

Capital

$245.1M

across filings

Active

Apr 2016

to Jul 2025

Most-connected co-filers (151)

James A. Rutherford · NEW ALBANY, OH9 shared Lowell A. Hare · Greenwood Village, CO9 shared Mark A. Horne · Ann Arbor, MI8 shared Bradley Backes · Cleveland, OH7 shared Jeff Barry · Ann Arbor, MI7 shared Meyer Malka · Palo Alto, CA7 shared Donald F. Mcaleenan · Anaheim, CA6 shared Chowdary Yalamanchili · Houston, TX6 shared Chris Zugaro · Dallas, TX6 shared Tyrone Johnson · Anaheim, CA6 shared DPM Capital Partners LLC · New York, NY6 shared George L. Jenkins · COLUMBUS, OH5 shared Gregory Thornton · Fort Collins, CO5 shared Michael P. Garrow · Central, Hong Kong5 shared Sunil R. Palakodati · Anaheim, CA5 shared Kevin V. Terrasi · Ann Arbor, MI5 shared Preston W. Smith · Dallas, TX5 shared Robert Cohen · Eden Prairie, MN4 shared Evan Ufer · Ann Arbor, MI4 shared Xinyi Chen · San Francisco, CA4 shared Jeffrey Ross · Colorado Springs, CO4 shared Anna P. Klavins · Central, Hong Kong4 shared Yvonne Connolly · Dublin 2, Ireland4 shared Robert S. Vansant · Anaheim, CA4 shared

Recent filings (30)

Traction Ag, Inc.Feb 2026 · 4 co-filers$2.0M Forj Software, Inc.Jan 2026 · 3 co-filers$3.0M ReadySet Surgical, Inc.Jul 2025 · 13 co-filers$3.6M Traction Ag, Inc.Mar 2025 · 12 co-filers$11.0M Plymouth Growth Partners V, L.P.May 2023 · 16 co-filers$125.0M Deck Commerce, Inc.Oct 2021 · 7 co-filers$7.8M Plymouth Growth Partners V, L.P.Mar 2021 · 16 co-filers$125.0M Sensei Labs Inc.Dec 2020 · 16 co-filers$6.0M Applied Levitation Systems LLCJul 2020 · 2 co-filers$7.5M MC10, Inc.Jul 2019 · 20 co-filers$6.1M MentorcliQ, Inc.Jun 2019 · 17 co-filers$6.3M PACEJET LOGISITICS INCApr 2019 · 15 co-filers$7.3M PLYMOUTH GROWTH PARTNERS IV, L.P.Mar 2019 · 14 co-filers$70.7M MC10, Inc.Nov 2018 · 26 co-filers$12.4M MC10, Inc.Aug 2018 · 19 co-filers$4.0M PACEJET LOGISITICS INCMay 2018 · 15 co-filers$4.9M CMC 6 Ashton Pointe, LLCApr 2018 · 14 co-filers$7.3M CMC 4 Seasons on Chelsea, LLCFeb 2018 · 14 co-filers$7.0M Applied Levitation Systems LLCJan 2018 · 2 co-filers$7.5M PACEJET LOGISITICS INCNov 2017 · 19 co-filers$4.0M MC10, Inc.Aug 2017 · 14 co-filers$10.0M PLYMOUTH GROWTH PARTNERS IV, L.P.Jun 2017 · 14 co-filers$100.0M MC10, Inc.Jun 2017 · 26 co-filers$7.7M Revolutionary Medical Devices, Inc.Jun 2017 · 16 co-filers$1.3M MC10, Inc.Dec 2016 · 28 co-filers$5.0M

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