Sionna Therapeutics, Inc. - Common Stock, $0.001 par value per share (SION)

Historical Holders from Q1 2025 to Q3 2025

Symbol
SION on Nasdaq
CUSIP
829401108
Type / Class
Equity / Common Stock, $0.001 par value per share
Shares outstanding
44.4M
All holders as of June 30, 2025
Q2 2025
Total 13F shares, excl. options
43.4M
Holdings value
$754M
% of all portfolios
0.001%
Grand Portfolio weight change
+0%
Number of holders
65
Number of buys
43
Number of sells
-18
Average Value change %
+0%
Average buys %
+0%
Average sells %
0%
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Sionna Therapeutics, Inc. - Common Stock, $0.001 par value per share (SION)

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
RA CAPITAL MANAGEMENT, L.P. 23.7% $80M 10.4M RA Capital Management, L.P. Feb 10, 2025
TPG GP A, LLC 15.2% $51.2M 6.68M TPG GP A, LLC Feb 10, 2025
ORBIMED ADVISORS LLC 8.4% $28.4M 3.7M ORBIMED ADVISORS LLC Feb 10, 2025
VIKING GLOBAL INVESTORS LP 6.7% $22.6M 2.95M VIKING GLOBAL INVESTORS LP Feb 10, 2025
Atlas Venture Fund XI, L.P. 6.5% $22.1M 2.89M Atlas Venture Fund XI, L.P. Feb 10, 2025
Enavate Sciences GP, LLC 5.6% $19M 2.48M Enavate Sciences GP, LLC Feb 10, 2025
JPMORGAN CHASE & CO 5% $28.5M 2.22M JPMORGAN CHASE & CO. Jun 30, 2025
Qatar Investment Authority 5% $28.4M 2.21M Qatar Investment Authority Jun 11, 2025

Institutional Holders of Sionna Therapeutics, Inc. - Common Stock, $0.001 par value per share (SION)

Period Reported Shares, Excl. Options Value, Excl. Options Change Price Investors
2025 Q3 153 $4.5K +$4.5K $29.41 1
2025 Q2 43.4M $754M +$37.3M $17.35 65
2025 Q1 41.5M $434M +$434M $10.46 47