JBM (Healthcare) (HKG:2161) said chief executive officer Wong Yat Wai, Patrick, will resign, with effect from April 30, to pursue other career opportunities, according to a Jan. 30 Hong Kong bourse filing.

Shares of the drug company were down more than 1% in Monday's late morning trade.

The company said executive director and chairman Derek Sum Kwong Yip will be appointed chief executive on the same date.

Sum has more than 38 years of strategic and corporate management experience in the pharmaceutical industry, and is also chairman and chief executive officer of Jacobson Pharma (HKG:2633), the filing showed.

Following the change, Sum will serve as both chairman and chief executive.