Masato Tsumamoto

This profile gathers the share dealings of Masato Tsumamoto in セルソース株式会社, where the filings describe the role as board member. We count 9 filings; the first trade dates from 13 June 2023 and the latest from 25 April 2025.

None of the filings is a plain purchase or sale on the open market; they cover grants, option exercises and other movements. Because grants and exercises are largely decided by remuneration plans, they are not counted as purchases here.

On 7 May 2025 came the latest disclosure, a transaction in セルソース株式会社. The median gap between a trade and its publication by EDINET (Japan FSA) is 7 days. Until a filing is published, the market cannot know about the trade. These figures are compiled from regulatory filings published by EDINET (Japan FSA). They describe what insiders did and are not a recommendation.