UnitedHealth Group Inc UNH announced Tuesday morning that its CEO, Andrew Witty, will resign for personal reasons..Stephen Hemsley, who previously held the CEO title from 2006 to 2017, will succeed him. Hemsley will also remain chairman of UnitedHealth's board of directors, and Witty will become senior adviser to the CEO.The company also revealed that it would suspend its 2025 outlook, citing that care activity continued to accelerate.UnitedHealth noted broadening to more types of benefit offerings than see ...