Zhang Yiying

Zhang Yiying, listed as chief executive, has filed trades across 2 companies (mainly through HKEX), most often in CHYY Development Group Ltd. and Sino Energy Conservation International Ltd. The record holds 8 filings, for trades running from 7 July 2020 to 2 June 2026.

Market trades split into 3 purchases and 4 sales (€10.6M). The amount is not disclosed for 3 filings. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. So far in 2026, the count stands at 1 purchase and 4 sales.

The latest filing, published on 12 June 2026, reports an open-market sale of €46k in CHYY Development Group Ltd. The last insider purchase was made public on 13 May 2026, 164 days ago. Between a trade and the moment it shows up on HKEX, the median delay is 9 days. That lag is the time during which only the insider knows about the trade. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. These figures are compiled from regulatory filings published by HKEX. They describe what insiders did and are not a recommendation.