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Symbol
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SION on Nasdaq
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Investment type
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Equity / Common Stock, $0.001 par value per share
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Latest Disclosed Ownership
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2.89M shares
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Security Ownership
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6.5%
Atlas Venture Fund XI, L.P. ownership in Sionna Therapeutics, Inc. Common Stock, $0.001 par value 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, $0.001 par value per share (SION).
This represents 6.5% percent ownership of the company.