SIONNA THERAPEUTICS INVESTIGATION ALERT: Bragar Eagel & Squire, P.C. is Investigating Sionna Therapeutics Inc on Behalf of Sionna Therapeutics Stockholders and Encourages Investors to Contact the Firm

Law firm Bragar Eagel & Squire is investigating Sionna Therapeutics after the company announced its SION-719 Phase 2a trial failed to achieve its primary endpoint for sweat chloride reduction. The stock price fell over 91% following the announcement. The firm is encouraging affected shareholders to contact them regarding potential securities law violations.

09/02/2026, 2:54 PM • GlobeNewswire

Securities Fraud Investigation Into Sionna Therapeutics, Inc. (SION) Continues – Shareholders Who Lost Money Urged To Contact Glancy Prongay Wolke & Rotter LLP, a Leading Securities Fraud Law Firm

Glancy Prongay Wolke & Rotter LLP is investigating Sionna Therapeutics for potential securities law violations following the company's announcement of a primary endpoint miss in its PreciSION CF Phase 2a trial on August 10, 2026. The news triggered a 91.2% stock price decline, falling from approximately $46.64 to $4.10 per share, prompting a class action lawsuit on behalf of affected shareholders.

08/26/2026, 4:30 PM • GlobeNewswire

Securities Fraud Investigation Into Sionna Therapeutics, Inc. (SION)  Continues – Shareholders Who Lost Money Urged To Contact The Law Offices of Frank R. Cruz

The Law Offices of Frank R. Cruz is investigating Sionna Therapeutics for potential federal securities law violations following the company's announcement of a primary endpoint miss in its PreciSION CF Phase 2a trial on August 10, 2026. The news triggered a 91.2% stock price decline, falling from approximately $46.64 to $4.10 per share, causing significant investor losses.

08/25/2026, 2:50 PM • GlobeNewswire

Sionna Therapeutics, Inc. (SION) Shareholders Who Lost Money – Contact Law Offices of Howard G. Smith About Securities Fraud Investigation

Law Offices of Howard G. Smith is investigating potential securities fraud violations at Sionna Therapeutics, Lincoln Educational Services, and Flotek Industries on behalf of shareholders who suffered losses. Sionna's stock plummeted 91.2% following disappointing Phase 2a trial results and a decision not to advance its lead candidate.

08/25/2026, 2:00 PM • GlobeNewswire

Lincoln Educational Services Corp. (LINC) Shareholders Who Lost Money – Contact Law Offices of Howard G. Smith About Securities Fraud Investigation

Law Offices of Howard G. Smith is investigating potential federal securities law violations at Lincoln Educational Services Corp., Sionna Therapeutics, Inc., and Flotek Industries, Inc. on behalf of shareholders who suffered losses. Lincoln Educational's stock fell 24.93% following disappointing Q2 2026 earnings that revealed only 1% student start growth and system-wide issues.

08/25/2026, 1:50 PM • GlobeNewswire

Vertex Pharmaceuticals' Rally Has a New Engine -- and Wall Street Thinks the Best Is Still Ahead

Vertex Pharmaceuticals strengthens its dominant position in the cystic fibrosis market after competitor Sionna Therapeutics failed a clinical trial for its CF drug candidate. With continued CF portfolio improvements, patent exclusivity until the late 2030s, and promising newer medicines like Casgevy for rare blood diseases and Journavx for pain management, Wall Street remains bullish on Vertex's growth prospects.

08/20/2026, 3:30 PM • The Motley Fool

Sionna Therapeutics to Participate in Upcoming June 2026 Investor Conferences

Sionna Therapeutics, a clinical-stage biopharmaceutical company focused on cystic fibrosis treatment, announced its participation in two major investor conferences in June 2026: the Jefferies Global Healthcare Conference on June 3rd and the Goldman Sachs 47th Annual Global Healthcare Conference on June 10th. The company is developing novel medicines targeting the CFTR protein, with a pipeline of small molecules designed to correct defects caused by the F508del genetic mutation.

05/27/2026, 8:00 AM • GlobeNewswire

Sionna Therapeutics to Participate in the 2026 RBC Capital Markets Global Healthcare Conference

Sionna Therapeutics, a clinical-stage biopharmaceutical company focused on cystic fibrosis treatment, announced that management will participate in a fireside chat at the 2026 RBC Capital Markets Global Healthcare Conference on May 20th, 2026. The company is developing novel medicines targeting the CFTR protein, with a focus on NBD1 stabilizers to address the F508del genetic mutation.

05/13/2026, 8:00 AM • GlobeNewswire

Sionna Insider Sells $2.5 Million in Stock Amid 215% Surge, but Here's What Investors Should Watch

A director of Sionna Therapeutics sold $2.5 million in shares (55,345 shares at $44.67 each) through OrbiMed Private Investments VIII, LP on April 17-18, 2026. Despite the 215% one-year stock surge, the sale represents only 2% of the related party's indirect holdings and reflects normal portfolio trimming. The biotech company is positioned well financially with $310 million in cash and runway into 2028, with Phase 2a data for its lead cystic fibrosis candidate expected this summer.

04/27/2026, 3:29 PM • The Motley Fool

Sionna Chief Legal Officer Cashed Out Her Shares. Her Options Are Another Story

Sionna Therapeutics' Chief Legal Officer Jennifer Fitzpatrick exercised and immediately sold 10,250 shares on March 5, 2026, generating approximately $347,000 in proceeds. The sale represented 100% of her direct common stock holdings, though she retains 50,935 options. The transaction was pre-scheduled under a 10b5-1 plan adopted in June 2025, suggesting a planned move rather than a reactive decision. Sionna has two clinical trials with topline data expected mid-2026 and maintains $310.3 million in cash runway through 2028.

03/30/2026, 9:08 PM • The Motley Fool

A Sionna Therapeutics (SION) Insider Sold 33,000 Shares for $1.5 Million

OrbiMed Advisors sold 33,356 shares of Sionna Therapeutics for approximately $1.5 million on December 24, 2025, reducing its indirect holdings to 3.56 million shares. The sale represents a routine disposition as part of structured block sales, not an indication of insider concern. Sionna, a clinical-stage biotech focused on cystic fibrosis treatments, reported positive phase 1 results in June and began phase 2 trials in October, with top-line results expected mid-2026.

01/03/2026, 2:35 PM • The Motley Fool

Sionna Therapeutics Announces Initiation of PreciSION CF Phase 2a Trial Evaluating NBD1 Stabilizer, SION-719, When Added to Standard of Care in Participants with Cystic Fibrosis

Sionna Therapeutics initiated a Phase 2a clinical trial evaluating SION-719, a novel NBD1 stabilizer, as an addition to standard cystic fibrosis treatment Trikafta. The trial aims to assess safety, tolerability, and potential improvement in CFTR protein function, with topline data expected in mid-2026.

10/21/2025, 7:00 AM • GlobeNewswire

Sionna Therapeutics to Participate in Upcoming September Investor Conferences

Sionna Therapeutics, a clinical-stage biopharmaceutical company focused on cystic fibrosis treatments, will participate in two upcoming investor conferences in September 2025, presenting their research on CFTR protein function normalization.

08/27/2025, 7:00 AM • GlobeNewswire