Biogen chairman to step down as new CEO walks thin line with Alzheimer's launch Leqembi

Biogen will soon have a new board leader, potentially giving new CEO Chris Viehbacher more freedom to make bold moves to salvage the big biotech from declining revenues and a bruised reputation. Biogen’s long-time chairman and influential biotech mogul Stelios Papadopoulos, Ph.D., will retire from the post under company policy, Viehbacher told reporters during a call Wednesday.