SIONNA THERAPEUTICS INC

Historical 13F Holders

Symbol
SION
CUSIP
829401108
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 829401108 since 12/18/2024, largest first.

Filer % of Class Filed
TPG GP A, LLC 13D
15.2% 2/18/2025
Event 2/10/2025
RA Capital Management, L.P. 13D/A
14.3% 9/21/2026
Event 9/17/2026
Viking Global Investors LP 13G/A
7.1% 5/15/2026
Event 3/31/2026
Orbimed Advisors LLC 13D/A
6.6% 4/20/2026
Event 4/15/2026
Enavate Sciences GP, LLC 13D
5.6% 2/18/2025
Event 2/10/2025
Atlas Venture Fund XI, L.P. 13D/A
5.4% 10/20/2025
Event 10/16/2025
Under 5%, checked the "5 percent or less" box, or amended by a later filing (2)
Qatar Investment Authority 13G/A
4.5% 5/12/2026
Event 3/31/2026
JPMorgan Chase & Co 13G/A 4.4% 10/31/2025
Event 9/30/2025

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 2 1.64 k $8.63 k
2026 Q2 156 48.9 M $2.13 B
2026 Q1 124 45.6 M $1.82 B
2025 Q4 101 44.0 M $1.81 B
2025 Q3 79 44.8 M $1.32 B
2025 Q2 67 43.4 M $754 M
2025 Q1 48 41.5 M $434 M