Mary Cunningham is a reporter for CBS MoneyWatch. Before joining the business and finance vertical, she worked at "60 Minutes," CBSNews.com and CBS News 24/7 as part of the CBS News Associate Program.

Shares of UnitedHealth Group (UNH) fell over 10% in premarket trading on Tuesday after the company announced the resignation of CEO Andrew Witty and suspended its full-year 2025 outlook.

Witty resigned "for personal reasons," UnitedHealth said. He was replaced, effective immediately, by the company's former CEO and current chairman, Stephen J. Hemsley. A UnitedHealth spokesperson ...

UnitedHealth Group said CEO Andrew Witty is stepping down for "personal reasons" and suspended its 2025 forecast, sending shares of the healthcare giant tumbling nearly 10%. Witty will act as a ...

Sir Andrew Witty, the chief executive of GlaxoSmithKline ... GSK’s chairman, Sir Philip Hampton, said: Andrew’s retirement next year will represent the culmination of 32 years of service ...

Sir Andrew Philip Witty, born August 22, 1964, is a highly accomplished business leader. Prior to joining UnitedHealth Group, he served as CEO of GlaxoSmithKline (GSK) from 2008 to 2017 ...

. Before joining UnitedHealth Group, he served as CEO of GlaxoSmithKline (GSK) from 2008 to 2017 (Reuters) UnitedHealth Group’s shares plunged over 10% in premarket trading on Tuesday after the ...

the company reportedly has asked its headhunting firm to put together a short list of candidates to replace current chief Andrew Witty. Sir Philip Hampton, who took over as chairman 18 months ago ...

Investors are willing to give Sir Andrew Witty time to return GlaxoSmithKline ... The arrival this month of Sir Philip Hampton, the veteran City troubleshooter, as chairman has increased questions ...

UnitedHealth Group on Tuesday announced the surprise exit of CEO Andrew Witty and suspended its 2025 forecast, sending shares of the health-care giant tumbling more than 10% in morning trading.