Klarna made its New York Stock Exchange debut this week, sending its market cap soaring to $15 billion—propelling around 40 staffers to millionaire status overnight, with its executive team gaining the most from the IPO. It’s not the first time Klarna’s success has created ultrarich employees—at least 115 of its workers have hit seven-figure net worths since 2021. And staffers at other tech companies, including Nvidia, Canva, and Palantir, who invested early have also made it into the exclusive wealth club ...