RA Capital Healthcare Fund, Director, 10% Stockholder: Sionna Therapeutics SION Planned sale · Filed 09/17

Sionna Therapeutics 10% owner files to sell $21.8M

RA Capital Healthcare Fund, a 10% owner of Sionna Therapeutics SION, filed on 09/17 a notice to sell 3,448,811 shares, $21.8M in total, 7.6% of the shares outstanding. It filed to sell $36M on 08/12 as well.

7.6% of shares outstanding to be sold