

Company Overview - Sionna Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on revolutionizing the treatment of cystic fibrosis (CF) by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (CFTR) protein [3] - The company aims to deliver differentiated medicines that restore CFTR function to near-normal levels by directly stabilizing CFTR's nucleotide-binding domain 1 (NBD1), which is believed to be crucial for improving clinical outcomes and quality of life for CF patients [3] - Sionna is advancing a pipeline of small molecules designed to correct defects caused by the F508del genetic mutation in NBD1 and is also developing complementary CFTR modulators to enhance CFTR function [3] Upcoming Events - Management will present at The Citizens Life Sciences Conference on May 7, 2025, at 12:30 p.m. ET [1] - A live webcast of the presentation will be available on the company's Investor Relations website, with a replay accessible for 90 days post-event [2] Investor Relations - Sionna intends to use its Investor Relations website to disclose material nonpublic information and comply with disclosure obligations under Regulation FD, encouraging investors to monitor the website along with press releases, SEC filings, and public conference calls [4]