Supernus Pharmaceuticals, Inc.

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Investigation Details

On February 19, 2025, The company announced that its Phase 2b study of SPN-820 for treatment-resistant depression failed to meet its primary endpoint, showing no significant improvement over placebo. This outcome comes as a surprise to investors, given the company’s previous optimism surrounding the drug’s potential.

Following this news, shares of Supernus Pharmaceuticals fell over 13% in trading.