04:12 PM EDT, 09/30/2025 (MT Newswires) -- Michael Cloonan, Director, President & CEO, on September 26, 2025, sold 25,000 shares in Sionna Therapeutics ( SION ) for $727,798. Following the Form 4 filing with the SEC, Cloonan has control over a total of 547,343 common shares of the company, with 547,343 shares held directly.

SEC Filing:

https://www.sec.gov/Archives/edgar/data/2036042/000170433625000004/xslF345X05/edgardoc.xml