Brian Thompson, the CEO of UnitedHealthcare who was fatally shot in midtown Manhattan on Wednesday in a “brazen, targeted attack” by New York police, was a longtime leader of America’s business community, a model student and star high school athlete – and he was embroiled in a high-profile insider trading lawsuit this year.

Thompson, 50, was living in Minnesota and visiting New York for UnitedHealthcare’s annual investor conference before he was killed.

Here’s what you should know:

Career: Thompson was named chief executive of UnitedHealthcare in 2021 and had been with the company since 2004. Before being named chief executive of UnitedHealthcare, Thompson served as CEO of the company’s government programs business, which includes its Medicare and pensions businesses. UnitedHealthcare is part of UnitedHealth Group, America’s largest insurance company.

Education: Thompson graduated from the University of Iowa in 1997 with a degree in business administration with a concentration in accounting. According to LinkedIn, he graduated at the top of his class. He was a Collegiate Scholar, Carver Scholar, State of Iowa Scholar and Faculty Scholar. Thompson graduated from South Hamilton High School in Jewell, Iowa in 1993.

Fraud allegations: Thompson was sued in May for alleged fraud and illegal insider trading. The Hollywood Firefighters’ Pension Fund filed a lawsuit against UnitedHealth Group, CEO Andrew Witty, Executive Chairman Stephen Hemsley and Thompson, alleging that the executives planned to drive up the company’s shares by triggering a U.S. antitrust investigation. Ministry of Justice against the company had not disclosed. The lawsuit alleged that Thompson knew about the investigation as early as October 2023 and sold 31% of his company shares, making a profit of $15 million, 11 days before the Wall Street Journal reported the investigation, causing a decline UnitedHealth shares rose by 5%.

CNN’s Kara Scannell contributed to this report.