On June 5, memory chip maker Jiangbolong (301308) disclosed that vice president Zhu Yu , citing personal funding needs, plans to sell up to 598,400 shares (0.1414% of total) between June 30 and September 29, 2026. Based on the June 5 closing price of RMB 520.01 , the sale could raise up to RMB 311 million ($42.7M) .

Zhu previously sold 577,300 shares in September 2025 at an average price of RMB 108.76, cashing out approximately RMB 62.8 million . Combined, his total take from the two transactions would reach approximately RMB 375 million ($51.5M) .

The sales follow Jiangbolong’s meteoric share rally: from an April 2025 low to a May 14 high of RMB 637.25 , the stock gained over 840% . Despite recent pullbacks, the stock is still up >100% year‑to‑date and 596% over 12 months .

ICgoodFind: A 840% stock surge triggers a second large executive sale at Jiangbolong, highlighting rich valuations in the memory sector.