Andrew Witty reacted on Friday to the deluge of social media posts celebrating the Dec. 4 killing of Thompson in Midtown Manhattan.

Amid all that happened with the murder of UnitedHealthcare CEO Brian Thompson, the subsequent social media reaction, and the arrest of his alleged shooter, Luigi Mangione, a video footage of UnitedHea

He was certainly one of the smartest guys. I think he was one of the best guys. I’m going to miss him. And I am incredibly proud to call him my friend.”

"Brian was one of the good guys. He was certainly one of the smartest guys," Witty wrote. "I'm going to miss him."

Andrew Witty, CEO of UnitedHealth Group, UnitedHealthcare's parent company, said he is "struggling to make sense" of Brian Thompson's murder

"No one would design a system like the one we have," UnitedHealth Group CEO Andrew Witty wrote in the New York Times.

Andrew Witty, the CEO of UnitedHealth Group, memorialized slain executive Brian Thompson in an op-ed and acknowledged industry flaws.

Andrew Witty, the CEO of UnitedHealth Group Inc., called for health-industry reforms in a New York Times essay, his first public comments since the killing of one of his company's top executives.

UnitedHealth Group CEO Andrew Witty mourned the killing of executive Brian Thompson and said he understood public frustrations with the “flawed” U.S. healthcare system. “No one would design a system like the one we have. And no one did. It’s a ...

In a Friday op-ed for the New York Times, Witty acknowledged that shortcomings exist in his industry. He called the "patchwork" health care system in the U.S. "flawed" and noted that the frustration of everyday Americans is understandable.

Brian Thompson, who was praised for his significant contributions to the healthcare industry, was a key advocate for advancing UnitedHealth’s goals. Witty described Thompson as instrumental in improving the healthcare system and promised to honor his legacy.

UnitedHealth Group CEO Andrew Witty conceded the U.S. health care system is flawed, addressing for the first time the murder of top executive Brian Thompson.