Biogen Faces Securities Investigation by Pomerantz Law Firm Following Disappointing Alzheimer's Drug Trial Results

Pomerantz LLP is investigating Biogen Inc. (NASDAQ: BIIB) for potential securities fraud following the announcement of underwhelming results from its Phase 2 CELIA study evaluating diranersen, an experimental treatment for early-stage Alzheimer’s disease. The stock dropped significantly after missing a key endpoint.

By Pomerantz LLP · PR Newswire · May 21, 2026, 22:40 UTC

Tickers: $BIIB

Topics: Biogen investor claims Phase 2 study results stock price drop

Read the full article at PR Newswire

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