UnitedHealth Group announced a dramatic leadership shakeup, with former CEO and current chairman Stephen Hemsley stepping back into the top job following the abrupt resignation of Andrew Witty. The move comes at a time of escalating crises for the healthcare giant — including the recent fatal shooting of Brian Thompson,

UnitedHealth Group announced the surprise exit of CEO Andrew Witty on Tuesday and suspended its 2025 forecast due to surging medical costs, sending its shares down more than 10% premarket.

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.

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

UnitedHealth Group was sued Wednesday for allegedly concealing how backlash from the killing of a top executive was damaging its business, causing its stock to nosedive after the insurer lowered its 2025 outlook.

Brian Thompson, acting director of the popular redevelopment program, exits as the Trump administration pushes agencywide reorganization and cuts.