第一工業製薬(株) Stock: price and insider trades · Japan

Every trade that managers of 第一工業製薬(株) disclose to EDINET (Japan FSA) is tracked on this page. The company sits in the Chemicals sector. In the past year (18 October 2025 to 18 October 2026), 3 filings came from 1 insider.

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.

For context, the typical company on the same exchange (median of 3,425 companies) published 3 filings over the same period, against 3 filings here.

There has been no open-market purchase by an insider of 第一工業製薬(株) for at least a year. Typically, a trade is published a median of 10 days after it takes place. That lag is the time during which only the insider knows about the trade.

Elsewhere in the same sector, our signals recently picked up insider purchases at Culp Inc. Every figure here comes from the filings published by EDINET (Japan FSA) and describes the past, not future prices; it is not investment advice.