Yunnan Tin's (SHE:000960) chief financial officer, Yue Min, resigned due to personal reasons, according to a Saturday disclosure with the Shenzhen bourse.
The Chinese tin producer's shares rose nearly 3% during Monday's midday trade.
The company's general manager, Huang Shi, will perform the duties of chief financial officer on an interim basis until the board of directors appoints Yue's successor.