Q2 2025 13F Holders as of 6/30/2025
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Type / Class
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Equity / Common Stock, $0.001 par value per share
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Shares outstanding
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44.6M
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Number of holders
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65
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Total 13F shares, excl. options
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43.4M
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Shares change
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+1.95M
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Total reported value, excl. options
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$754M
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Value change
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+$37.3M
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Number of buys
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43
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Number of sells
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-18
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Price
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$17.35
Significant Holders of Sionna Therapeutics, Inc. - Common Stock, $0.001 par value per share (SION) as of Q2 2025
73 filings reported holding SION - Sionna Therapeutics, Inc. - Common Stock, $0.001 par value per share as of Q2 2025.
Sionna Therapeutics, Inc. - Common Stock, $0.001 par value per share (SION) has 65 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC).
These institutions hold a total of 43.4M shares
of 44.6M outstanding shares and own 97.49% of the company stock.
Largest 10 shareholders include RA CAPITAL MANAGEMENT, L.P. (10.4M shares), TPG GP A, LLC (6.74M shares), ORBIMED ADVISORS LLC (3.7M shares), Atlas Venture Life Science Advisors, LLC (3.69M shares), VIKING GLOBAL INVESTORS LP (3.2M shares), ENAVATE SCIENCES GP, LLC (2.48M shares), JPMORGAN CHASE & CO (2.22M shares), PERCEPTIVE ADVISORS LLC (1.22M shares), BRAIDWELL LP (1.08M shares), and DEERFIELD MANAGEMENT COMPANY, L.P. (971K shares).
This table shows the top 65 institutional shareholders of the company equity. This data is sourced directly from the SEC via 13F filings.
| Investor |
Option |
Weight % |
Change % |
Value $ |
* Price $ |
Shares |
Share Change |
Activity |
Report Period |
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.