Former executive director of China Kingstone Mining (HKG:1380), Zheng Yonghui, sold 56,380,000 shares in the company in the open market on Oct. 24, an Oct. 25 bourse filing said.

The shares represent roughly 26% of the marble stone company's issued share capital.

Following the disposal, Zheng owns 11,877 shares in the firm, representing 0.01% of its issued shares. He has hence ceased to be the company's substantial shareholder.

Shares of the firm closed nearly 19% lower on Monday.

Price (HKD): $0.18, Change: $-0.043, Percent Change: -18.94%