PHILADELPHIA, Dec. 26, 2025 /PRNewswire/ -- National plaintiffs' law firm Berger Montague PC announces that a class action lawsuit has been filed against Klarna Group plc (NYSE: KLAR) ("Klarna" or the "Company") on behalf of investors who purchased or otherwise acquired Klarna securities during the period of September 7, 2025 through December 22, 2025 (the "Class Period"), including shares issued pursuant and/or traceable to Klarna's September 2025 initial public offering ("IPO"). Investor Deadline: Invest ...