Biogen (BIIB) announced the initiation of dosing in the global clinical study, TRANSCEND. The Phase 3 study will evaluate the efficacy and ...

Biogen posted fourth-quarter revenue and profit that topped expectations as its cost cuts showed progress and new products, including its breakthrough Alzheimer's treatment Leqembi, saw growth.

Biogen expects full-year 2025 total revenue to decline by a mid-single digit percentage. The company’s stock was down about 6% at 10 a.m. on Wednesday with shares priced at around $131 apiece.