HBM's (HKG:2142) chief executive officer and chairman, Jingsong Wang, bought an additional 400,000 shares in the company from the open market at HK$3.5 apiece on Jan. 27, a Jan. 28 Hong Kong bourse filing stated.
The shares represent roughly 0.052% of the drugmaker's issued share capital.
Following the purchase, Wang holds 70,297,400, or 9.212%, shares in the company.