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Gossamer Bio Provided Forward-Looking Trial Guidance While Omitting the Heightened Statistical Threshold That Made a Miss More Likely
Guidance that set expectations for a meaningful readout. Shareholders who lost money on GOSS are encouraged to submit their information here. You may also contact Joseph E. Levi, Esq. via email at jlevi@levikorsinsky.com" rel="nofollow">jlevi@levikorsinsky.com" target="_blank" rel="nofollow">jlevi@levikorsinsky.com" rel="nofollow">jlevi@levikorsinsky.com or by telephone at (212) 363-7500.
The forward guidance created a specific expectation: results in February 2026, with management expressing they were "more optimistic than ever about the likelihood of achieving positive results." At the time of that statement on May 15, 2025, the Company did not disclose to investors that the PROSERA study's pre-specified statistical plan required significance at alpha = 0.025 -- a threshold twice as stringent as the conventional 0.05 level used in many pivotal trials. The actual p-value came in at 0.032, which would have cleared a 0.05 bar but failed the 0.025 requirement.
The gap between the guidance tone and the undisclosed statistical hurdle is the focus of this investigation. Investors who relied on management's forward-looking statements and timing guidance had no way to assess the elevated risk of a technical miss. Those who purchased GOSS shares and suffered a loss may click here to discuss their legal rights. You may also contact Joseph E. Levi, Esq. via email at jlevi@levikorsinsky.com or by telephone at (212) 363-7500.
Levi & Korsinsky, LLP | Top 50 Securities Firm | (212) 363-7500 | www.zlk.com
CONTACT:
Levi & Korsinsky, LLP
Joseph E. Levi, Esq.
Ed Korsinsky, Esq.
33 Whitehall Street, 27th Floor
New York, NY 10004
jlevi@levikorsinsky.com
Tel: (212) 363-7500
Fax: (212) 363-7171
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SOURCE Levi & Korsinsky, LLP
