Sionna Therapeutics, Inc. (NASDAQ:SION – Get Free Report)’s share price gapped down before the market opened on Monday following insider selling activity. Sionna Therapeutics shares last traded at $41.41, with a volume of 14,264 shares changing hands. Weiss Ratings reaffirmed a “sell (e+)” rating on shares of Sionna Therapeutics in a research report on Monday, December 29th. Sionna Therapeutics Company Profile(Get Free Report)Sionna Therapeutics is a clinical-stage biotechnology company dedicated to developing next-generation RNA therapeutics for oncology and immunology indications. Recommended StoriesReceive News & Ratings for Sionna Therapeutics Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Sionna Therapeutics and related companies with MarketBeat.com's FREE daily email newsletter.