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Biogen faces securities fraud probe after Alzheimer's drug trial misses key goal, shares drop 6.4%.

Market News
28 May 2026
PRNewsWire
View Source
Bearish
pluang ai news

Biogen is under investigation by Pomerantz LLP for possible securities fraud following the release of Phase 2 trial results for its Alzheimer's drug candidate diranersen. Although Biogen called the results "compelling," the trial failed to meet its primary dose-response endpoint, causing the stock to fall 6.43% on May 14, 2026. The investigation will examine whether Biogen and its executives engaged in unlawful business practices. This legal scrutiny could impact investor confidence and the company's future drug development efforts.

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