Suzhou Qingyue Optoelectronics Technology's (SHA:688496) chief financial officer, Zhang Xiaobo, resigned due to personal reasons, according to a Shanghai bourse filing on Tuesday.
Zhang will continue to serve in other positions within the new display device manufacturer.
Chen Gang, the company's general manager, will temporarily perform the duties of the CFO until Zhang's successor is named.
The company's shares slumped 20% during the afternoon trade.