Need Help? Call : (310) 914-5007
Need Help? Call : (310) 914-5007
The Law Offices of Frank R. Cruz announces an investigation of Sionna Therapeutics, Inc. (“Sionna” or the “Company”) (NASDAQ: SION) on behalf of investors concerning the Company’s possible violations of federal securities laws.
On August 10, 2026, Sionna reported topline data from its PreciSION CF Phase 2a trial and provided a corporate update. Among other items, Sionna announced a primary endpoint miss and that the Company will not advance SION-719 as an add-on to standard of care.
On this news, Sionna’s stock fell $46.54, or 91.2% per share, to close at $4.10 per share on August 10, 2026
If you suffered a loss on your Sionna Therapeutics, Inc. investments or would like to inquire about joining an action to recover your loss under the federal securities laws, please complete the form below. Please note that submission of this form does not by itself form an attorney-client relationship nor does filing out this form mean you have joined any lawsuit.
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