Glancy Prongay Wolke & Rotter LLP, a Leading Securities Fraud Law Firm Encourages Soleno Therapeutics, Inc. (SLNO) Shareholders To Inquire About Securities Fraud Class Action

LOS ANGELES--(BUSINESS WIRE)--Glancy Prongay Wolke & Rotter LLP, a leading national shareholder rights law firm, announces that a securities fraud class action lawsuit has been filed on behalf of investors who purchased or otherwise acquired Soleno Therapeutics, Inc. (“Soleno” or the “Company”) (NASDAQ: SLNO) common stock between March 26, 2025 and November 4, 2026, inclusive (the “Class Period”). Soleno investors have until May 5, 2026 to file a lead plaintiff motion.

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What Happened?

On August 15, 2025, activist investor organization Scorpion Capital LLC published a 415-page report regarding Soleno entitled “Russian Roulette With Prader-Willi Children: How The Latest Rare-Disease Price-Gouging Scheme Fleeced the FDA, Parents, And Its Own Study Investigators With A Worthless, Toxic Drug.” The report alleges a number of problems with the Company’s diazoxide choline tablet (“DCCR”), including clinical trial conduct, safety and efficacy concerns, and patient reports of serious adverse reactions following its commercial launch.

On this news, the price of Soleno stock declined $9.27 per share, or 11.98%, over two trading days to close at $68.09 on August 18, 2025, thereby injuring investors.

Then, on September 10, 2025, Soleno filed a Form 8-K with the U.S. Securities and Exchange Commission disclosing that a patient had died after taking DCCR.

On this news, the price of Soleno stock declined $13.49 per share, or 19.21%, over two trading days to close at $56.72 on September 11, 2025, thereby further injuring investors.

Finally, on November 4, 2025, Soleno reported its third quarter 2025 financial results, revealing that the Scorpion Capital report had disrupted DCCR’s launch trajectory and raised concerns within the Prader-Willi syndrome community, in part resulting in a lower number of patient start forms and increased discontinuations beginning after the report’s publication.

On this news, the price of Soleno stock declined $16.98 per share, or 26.59% to close at $46.87 on November 5, 2025, thereby further injuring investors.

What Is The Lawsuit About?

The complaint filed in this class action alleges that throughout the Class Period, Defendants made materially false and/or misleading statements, as well as failed to disclose material adverse facts about the Company’s business, operations, and prospects. Specifically, Defendants failed to disclose to investors disclose that: (1) the Soleno Phase 3 clinical trial program for DCCR had systematically downplayed, misrepresented, and/or concealed significant evidence of safety concerns potentially related to the administration of DCCR, including issues related to excess fluid retention in clinical trial participants; (2) as a result, the administration of DCCR to treat hyperphagia in individuals with PWS posed materially greater safety risks than disclosed by Soleno or its executives; and (3) consequently, DCCR had materially lower commercial viability and undisclosed risks related to the likelihood of significant and widespread adverse events after its commercial launch, including risks related to patient discontinuation rates, lower patient adoption, prescriber reluctance, adverse regulatory action, and potential reputational and legal fallout; and (4) as a result, Defendants’ positive statements about the Company’s business, operations, and prospects were materially misleading and/or lacked a reasonable basis at all relevant times.

If you purchased or otherwise acquired Soleno common stock during the Class Period, you may move the Court no later than May 5, 2026 to request appointment as lead plaintiff in this putative class action lawsuit.

Contact Us To Participate or Learn More:

If you wish to learn more about this action, or if you have any questions concerning this announcement or your rights or interests with respect to these matters, please contact us:
Charles Linehan, Esq.,
Glancy Prongay Wolke & Rotter LLP,
1925 Century Park East, Suite 2100,
Los Angeles, California 90067
Email: [e-mail]
Telephone: [phone],
Toll-Free: 888-773-9224
Visit our website at www.glancylaw.com.
Follow us for updates on LinkedIn, Twitter, or Facebook.

If you inquire by email, please include your mailing address, telephone number and number of shares purchased.

To be a member of the Class you need not take any action at this time; you may retain counsel of your choice or take no action and remain an absent member of the Class.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules.