Women have long faced more challenges than men while making their way to the uppermost ranks of prominent companies. And it’s harder for them to hold on to that top spot. Consider that CVS the healthcare company,

During her time at the helm of CVS Health, former chief executive Karen Lynch often placed her complicated family history at the center of her argument for why she wanted to reinvent her company — and with it the way that health care is delivered in America.

CVS Health Chief Executive Officer Karen Lynch has stepped down and will be replaced by David Joyner, who runs the company's pharmacy benefit firm, Caremark.