The health care conglomerate is facing mounting financial problems – and ongoing consumer anger over high costs and denied claims.

The head of UnitedHealth Group is stepping down, ending a rocky four years marked by rising medical costs, a major cyberattack, and the high-profile killing of an insurance executive.Andrew Witty has left his position as CEO of

UnitedHealth Group surprises investors with what its CEO said was an "unusual and unacceptable" quarterly earnings miss, and lowers its outlook for the full year due to higher-than-expected medical costs, sparking a more than 20% selloff in shares that reverberated across the sector.

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 senior advisor to his successor,

UnitedHealth Group said Chief Executive Andrew Witty stepped down for “personal reasons” after presiding over a punishing period for the company, including a steep drop in its shares after its quarterly earnings last month fell significantly short of investors’ expectations.

"We are grateful for Andrew's stewardship of UnitedHealth Group, especially during some of the most challenging times any company has ever faced," Hemsley said. "The Board and I have greatly valued his leadership and compassion as chief executive and as a director and wish him and his family the best.