Want to see SION full AI Analyst Report?
Sionna Therapeutics, Inc. (SION) Ownership Overview
33.61% Insiders
9.60% Mutual Funds
<0.01% Other Institutional Investors
6.88% ETFs
49.91% Public Companies and
Individual Investors
The ownership structure of Sionna Therapeutics, Inc. (SION) stock is a mix of institutional, retail, and individual investors. Approximately 16.48% of the company’s stock is owned by Institutional Investors, 33.61% is owned by Insiders, and 49.91% is owned by Public Companies and Individual Investors.
Recent Insider Trading Activity
Date | Name | Activity | Value |
|---|---|---|---|
Feb 04, 2026 | xxxxxxxxxxxxx | $1379866 | |
Feb 04, 2026 | xxxxxxxxxxxxx | $1379866 | |
Jan 26, 2026 | xxxxxxxxxxxxx | $10000000 | |
Dec 29, 2025 | xxxxxxxxxxxxx | $1486010 |
Recent Hedge Fund Trading Activity
Date | Firm | Activity | Value |
|---|---|---|---|
Mar 31, 2025 | xxxxxxxxxxxxx | $3072217 | |
Mar 31, 2025 | xxxxxxxxxxxxx | $26396820 |
Top Shareholders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 9,905,045 | Institution | 21.94% | 439,585,897 | |
| 6,494,962 | Insider | 14.39% | 288,246,414 | |
| 3,195,181 | Institution | 7.08% | 141,802,133 | |
| 2,995,602 | Insider | 6.63% | 132,944,817 | |
| 2,469,959 | Insider | 5.47% | 109,616,780 | |
| 2,469,959 | Insider | 5.47% | 109,616,780 | |
| 1,167,550 | Institution | 2.59% | 51,815,869 | |
| 1,002,446 | Institution | 2.22% | 44,488,553 | |
| 970,590 | Institution | 2.15% | 43,074,784 | |
| 968,921 | Institution | 2.15% | 43,000,714 |
Top Mutual Fund Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 1,002,446 | Institution | 2.22% | 44,488,553 | |
| 651,048 | Institution | 1.44% | 28,893,510 | |
| 649,342 | Institution | 1.44% | 28,817,798 | |
| 551,829 | Institution | 1.22% | 24,490,171 | |
| 547,443 | Institution | 1.21% | 24,295,520 | |
| 178,151 | Institution | 0.39% | 7,906,341 | |
| 175,239 | Institution | 0.39% | 7,777,107 | |
| 162,142 | Institution | 0.36% | 7,195,862 | |
| 95,632 | Institution | 0.21% | 4,244,148 | |
| 81,950 | Institution | 0.18% | 3,636,941 |
Top ETF Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 934,641 | Institution | 2.07% | 41,114,858 | |
| 652,014 | Institution | 1.44% | 27,769,276 | |
| 485,457 | Institution | 1.08% | 21,544,582 | |
| 192,095 | Institution | 0.43% | 8,525,176 | |
| 172,726 | Institution | 0.38% | 7,665,580 | |
| 168,317 | Institution | 0.37% | 7,404,265 | |
| 106,139 | Institution | 0.24% | 4,669,055 | |
| 69,636 | Institution | 0.15% | 2,965,797 | |
| 49,008 | Institution | 0.11% | 2,174,975 | |
| 40,627 | Institution | 0.09% | 1,787,182 |
FAQ
Who Owns Sionna Therapeutics, Inc. (SION)?
According to the latest TipRanks data, approximately <0.01% of the company's stock is held by institutional investors, 33.61% is held by insiders, and 49.91% is held by retail investors.
What percentage of Sionna Therapeutics, Inc. (SION) stock is held by institutional investors?
According to the latest TipRanks data, approximately <0.01% of Sionna Therapeutics, Inc. (SION) stock is held by institutional investors.
What percentage of Sionna Therapeutics, Inc. (SION) stock is held by retail investors?
According to the latest TipRanks data, approximately 49.91% of Sionna Therapeutics, Inc. (SION) stock is held by retail investors.
Who owns the most shares of Sionna Therapeutics, Inc. (SION)?
Peter Kolchinsky owns the most shares of Sionna Therapeutics, Inc. (SION).
What is the significance of the ownership structure for a publicly traded company?
The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.