Daisuke Tatsumi

Daisuke Tatsumi is a declared insider of 光世証券株式会社 (chief executive), with filings sourced from EDINET (Japan FSA). Between 3 February 2023 and 13 November 2025, the trades on record add up to 4 filings.

None of the filings is a plain purchase or sale on the open market; they cover grants, option exercises and other movements. Grants and option exercises follow pay plans set in advance, so they reveal less about an insider's own view than a purchase made with personal money.

Most recently, on 18 November 2025, the filings show a transaction in 光世証券株式会社. Filings reach the EDINET (Japan FSA) feed a median of 3 days after the trade. That lag is the time during which only the insider knows about the trade. This summary is built from EDINET (Japan FSA) disclosures alone and does not predict where the share price will go.