Atlas Venture Fund XI, L.P. 13D/13G Filings for Sionna Therapeutics, Inc. (SION)

Atlas Venture Fund XI, L.P. 13D and 13G filings for Sionna Therapeutics, Inc.:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Shares have been adjusted for stock splits.
Time period
Reported
DateTime		 Transaction
Date		 Type Company
Symbol		 Filed By
Symbol		 Shares Owned
% Owned		 Shares Vs. Prev Report View
2025-02-18
4:59 pm
Purchase		 2025-02-10 13D Sionna Therapeutics, Inc.
SION		 Atlas Venture Fund XI, L.P. 2,886,293
6.500%		 2,886,293increase
(New Position)		 Filing