Seisei Co.,Ltd.

Seisei Co.,Ltd. is a declared insider at 4 companies; the most frequent names are 東京コスモス電機株式会社, 株式会社ストライダーズ and 盟和産業株式会社. In total, 27 filings cover trades dated from 20 February 2023 to 13 October 2026.

None of the filings is a plain purchase or sale on the open market; they cover grants, option exercises and other movements. Compensation-driven entries like these are tracked, but they say little about how insiders judge the share price.

The latest filing, published on 21 October 2026, reports a transaction in 株式会社ストライダーズ. The median gap between a trade and its publication by EDINET (Japan FSA) is 8 days. 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.