GSK's CEO Emma Walmsley will step down in December and be replaced by insider Luke Miels, the British drugmaker said on Monday.

GSK Chief Executive Emma Walmsley, the first woman to lead a major pharmaceutical company, will step down Dec. 31 after more than eight years at the head of the London-based…

GSK's CEO Emma Walmsley will step down in December and be replaced by insider Luke Miels, the British drugmaker said on Monday.