CVS replaces CEO Karen Lynch with exec David Joyner as profits, share price suffer CNBCCVS Names David Joyner as New Chief Executive The Wall Street JournalCVS Health CEO Lynch steps down, Joyner named to the post The Associated PressCVS Health’s stock tumbles 12% after company lowers guidance and names new CEO MarketWatchCEO Karen Lynch at CVS is out, with company shares down 19% this year and the chain struggling ABC News