Bragar Eagel & Squire, P.C. Litigation Partner Brandon Walker Encourages Investors Who Suffered Losses In Sionna Therapeutics (SION) To Contact Him Directly To Discuss Their Options

If you purchased or acquired stock in Sionna Therapeutics and would like to discuss your legal rights, contact Bragar Eagel & Squire partners Brandon Walker or Melissa Fortunato by email at investigations@bespc.com or by telephone at (212) 355-4648.

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NEW YORK, Sept. 02, 2026 (GLOBE NEWSWIRE) --

What’s Happening:

• Bragar Eagel & Squire, P.C., a nationally recognized stockholder rights law firm, is investigating potential claims against Sionna Therapeutics Inc (“Sionna Therapeutics” or the “Company”) (NASDAQ:SION) on behalf of Sionna Therapeutics stockholders. Our investigation concerns whether Sionna Therapeutics has violated the federal securities laws and/or engaged in other unlawful business practices.
  
  

Investigation Details:

• On August 10, 2026, Sionna Therapeutics announced that its "SION-719 Phase 2a proof-of-concept trial did not achieve key activity endpoint of sweat chloride reduction when added to standard of care."
• On this news, the price of Sionna Therapeutics stock fell more than 91%.
  
  

Next Steps:

• If you purchased or otherwise acquired Sionna Therapeutics shares and suffered a loss, are a long-term stockholder, have information, would like to learn more about these claims, or have any questions concerning this announcement or your rights or interests with respect to these matters, please contact Brandon Walker or Melissa Fortunato by email at investigations@bespc.com, by telephone at (212) 355-4648, or by filling out this contact form. There is no cost or obligation to you.
  
  

About Bragar Eagel & Squire, P.C.:

Bragar Eagel & Squire, P.C. is a nationally recognized law firm with offices in New York, South Carolina, and California. The firm represents individual and institutional investors in securities, derivative, and commercial litigation as well as individuals in consumer protection and data privacy litigation. The firm has a nationwide practice and routinely handles cases in both federal and state courts. For more information about the firm, please visit www.bespc.com. Attorney advertising. Prior results do not guarantee similar outcomes.

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Contact Information:

Bragar Eagel & Squire, P.C.
Brandon Walker, Esq.
Melissa Fortunato, Esq.
(212) 355-4648
investigations@bespc.com
www.bespc.com