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 drugmaker.

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.