BioNTech Stock Sinks Over 20% on March 10, 2026 After Q4 2025 Loss and Founder Exit Plan
On March 10, 2026, BioNTech's Nasdaq-listed shares dropped more than 20% after the company reported a wider-than-expected adjusted loss for Q4 2025 and issued weak 2026 revenue guidance. The selloff accelerated as investors reacted to news that co-founders Ugur Sahin and Özlem Türeci intend to leave their executive roles by the end of 2026 to lead a new mRNA-focused venture.