Jiandong Xu

Filings by Jiandong Xu span 2 companies, the busiest being Estrella Immunopharma, Inc. and Semnur Pharmaceuticals, Inc. Between 11 April 2022 and 18 August 2026, the trades on record add up to 5 filings.

No open-market sale appears; the market trades are 4 purchases worth €4.7M. Unlike grants, an open-market purchase is paid for by the insider, at the market price. Besides market trades, the filings include 1 option exercise. Since January 2026: 3 purchases and no sales on the market.

In size, the median ticket on the buying side is €1,062. On 1 out of 4 purchases, another insider of the same company was buying within the same 30 days. Purchases made close together by different insiders form what is called a cluster. Looking at 3 purchases old enough to measure, the stock rose over the following 90 days in 0% of cases; the median change was -52.5%. Past outcomes like these are no guarantee of what comes next.

On 25 August 2026 came the latest disclosure, an option exercise for €70k in Estrella Immunopharma, Inc. The most recent open-market purchase was published on 29 April 2026, 175 days ago. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.