Symbol
SION on Nasdaq
Investment type
Equity - Shares of Stock
Class
Common Stock, par value $0.001 per share
Latest Disclosed Ownership
2.89M shares
Security Ownership
6.5%

Atlas Venture Fund XI, L.P. ownership in Sionna Therapeutics, Inc. Common Stock, par value $0.001 per share (SION)

2025-02-18 - Atlas Venture Fund XI, L.P. has filed an SCHEDULE 13D form with the Securities and Exchange Commission (SEC) disclosing ownership of 2.89M shares of Sionna Therapeutics, Inc. Common Stock, par value $0.001 per share (SION). This represents 6.5% percent ownership of the company.