UnitedHealth Group Inc (NYSE:UNH) Chairman Stephen Hemsley and three senior executives reportedly garnered $101.5 million from stock sales during the months leading up to the public revelation of a federal antitrust investigation.  The cyberattack on UnitedHealth’s Change Healthcare subsidiary has also contributed to stock concerns. This attack disrupted critical data and payment systems, impacting the healthcare industry.  The sales occurred between mid-October, shortly after the company allegedly received notice of the Justice Department probe, and late February, just before media reports surfaced about the investigation.  The company’s stock experienced a decline following the widespread coverage of the investigation. There is speculation regarding ...