Yantai Jereh Oilfield Services' (SHE:002353) chairman, Li Zhiyong, and vice presidents, Li Huitao and Lu Wei, raised their holdings in the company by purchasing 66,900 shares for 9.3 million yuan, according to a Shenzhen bourse filing on Thursday.
The shares were bought between May 27 and Aug. 26 through centralized bidding.
Li Zhiyong, Li Huitao and Lu Wei's holdings were collectively raised to 0.112% from 0.106%.
The oil equipment manufacturing company's shares rose 1% during the morning trade.