13D/13G Filings - Sionna Therapeutics Inc. (SION)

Real time Form 13D and 13G transaction reports:

  • 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.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Time period
Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2025-02-18
8:56 pm
Purchase
2025-02-1013DSionna Therapeutics Inc.
SION
TPG GP A, LLC6,684,962
15.200%
6,684,962increase
(New Position)
Filing
History
2025-02-18
4:59 pm
Purchase
2025-02-1013DSionna Therapeutics Inc.
SION
Atlas Venture Fund XI, L.P. 2,886,293
6.500%
2,886,293increase
(New Position)
Filing
History
2025-02-18
4:25 pm
Purchase
2025-02-1013DSionna Therapeutics Inc.
SION
RA Capital Management, L.P.10,445,322
23.700%
10,445,322increase
(New Position)
Filing
History
2025-02-18
4:22 pm
Purchase
2025-02-1013DSionna Therapeutics Inc.
SION
Enavate Sciences GP, LLC2,478,030
5.600%
2,478,030increase
(New Position)
Filing
History
2025-02-14
4:58 pm
Purchase
2025-02-1013GSionna Therapeutics Inc.
SION
VIKING GLOBAL INVESTORS LP2,952,754
6.700%
2,952,754increase
(New Position)
Filing
History
2025-02-13
4:47 pm
Purchase
2025-02-1013DSionna Therapeutics Inc.
SION
ORBIMED ADVISORS LLC3,704,959
8.400%
3,704,959increase
(New Position)
Filing
History