Investor · Escondido, CA

Masatoshi Hagiwara

Open Masatoshi in the network graph →

Filings

1

SEC Form D

Connections

4

co-filers

Capital

$3.4M

across filings

Active

Dec 2025

to Dec 2025

Most-connected co-filers (4)

Takashi Kiyoizumi · Escondido, CA1 shared Barry D. Meyers · HAMILTON, Bermuda1 shared Nobuhiro Yagi · Escondido, CA1 shared David Snyder · Kittanning, PA1 shared

Recent filings (1)

BTB Therapeutics, Inc.Dec 2025 · 8 co-filers$7.4M BTB Therapeutics, Inc.Dec 2025 · 8 co-filers$7.4M

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