Atlas Venture Fund XI, LP's Sale of Sionna Therapeutics Common Stock

Atlas Venture Fund XI, LP has filed a Form 144 with the SEC, indicating its intention to sell 46,273 shares of Sionna Therapeutics, Inc. common stock. The shares were acquired through a private placement on March 4, 2024. The filing also details the fund's recent sales of Sionna Therapeutics common stock over the past three months, totaling over $14 million in gross proceeds. The sales were executed through Merrill Lynch on the NASDAQ exchange. This filing is significant as it reflects a substantial divestment by a major shareholder, potentially impacting the stock's market dynamics.