Sebastian Siemiatkowski has been CEO of Klarna for 20 years. He now faces his biggest test yet with a U.S. IPO fast ...

Klarna insiders share how ahead of a potential IPO, the payments startup is cutting costs, streamlining roles, and embracing ...

U.S. stocks took a heavy beating during the first quarter of the year. But the second could be much more treacherous.

LONDON — After 20 years in the role as Klarna's CEO, Sebastian Siemiatkowski is about to face his toughest test yet as the financial technology firm prepares for its blockbuster debut in New York.