Investor · Tokyo, M0

Jaehyuk Cha

Open Jaehyuk in the network graph →

Filings

8

SEC Form D

Connections

111

co-filers

Capital

$45.5M

across filings

Active

Nov 2022

to Aug 2025

Most-connected co-filers (111)

Tomoko Nakada · Tokyo, M06 shared Alex Wu · Tokyo, M06 shared Daisuke Watanabe · Tokyo, M04 shared Brian A. Borton · La Jolla, CA2 shared Martin Steyn · Grand Cayman, Cayman Islands2 shared John A. Coelho · La Jolla, CA2 shared Jason Parikh · Norfolk, VA2 shared Nicolas Ibanez · NEW YORK, NY2 shared Michael Kamis · Calgary, Alberta, Canada2 shared Peter Buzy · Baltimore, MD2 shared Mark J. Robinson · Rochester, NY2 shared Peter J. Mcharg · Rochester, NY2 shared E. D. Bell · Greensboro, NC2 shared August J. Peterson · Austin, TX2 shared Robert Shattuck · Holladay, UT2 shared Shili Zhan · Annandale, VA2 shared Michele Zimba · Eugene, OR2 shared James Shephard · Eugene, OR2 shared Ryan Roeder · Grand Rapids, MI2 shared Theodore J. Lundberg · Rochester, NY2 shared Justin J. Yang · Rochester, NY2 shared Michael J. Williams · Rochester, NY2 shared Joseph J. Volpe · Rochester, NY2 shared Mark Dumas · Norfolk, VA2 shared

Recent filings (8)

ADVANTEST CORPAug 2025 · 100 co-filers ADVANTEST CORPAug 2025 · 100 co-filers American Aerogel CorpApr 2025 · 32 co-filers$78.0M American Aerogel CorpSep 2024 · 32 co-filers$66.0M ADVANTEST CORPSep 2024 · 97 co-filers$163.5M ADVANTEST CORPSep 2024 · 97 co-filers$163.5M Epsilon Healthcare Innovation Fund II, LPNov 2023 · 8 co-filers$50.0M ADCA Technology Holdings LtdApr 2023 · 2 co-filers$10K Epsilon Healthcare Innovation Fund II, LPNov 2022 · 8 co-filers$50.0M ADCA Technology Holdings LtdNov 2022 · 2 co-filers$100K

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