Cloonan Michael - Insider Non-Derivative Transactions at Sionna Therapeutics, Inc. (SION) - (SEC)
Updated on January 3, 2026.
According to recent SEC insider information filed on Oct 21, 2025, Cloonan Michael's relationship to Sionna Therapeutics, Inc. (SION) is Director,Officer (President & CEO), and currently has 580,875 shares of Common Stock.
The chart below shows the number of shares owned, and the table shows the recent insider transactions.
You can see similar information for other SION insiders.
Related Topics: SEC Topic List.
Data Source: SEC.
Cloonan Michael - Insider Non-Derivative Transactions of SION Common Stock
Cloonan Michael - Insider Non-Derivative Transactions at SION
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| Date | Transaction | No. of Shares | Price Per Share | Shares Owned After Transactions |
|---|---|---|---|---|
| Oct 22, 2025 | Sell -- (Common Stock) | 30049 | 35.63 | 547343 |
| Oct 22, 2025 | Sell -- (Common Stock) | 22895 | 36.6 | 547343 |
| Oct 22, 2025 | Sell -- (Common Stock) | 33532 | 37.31 | 547343 |
| Oct 22, 2025 | Sell -- (Common Stock) | 13324 | 34.44 | 547343 |
| Oct 22, 2025 | M -- (Common Stock) | 13324 | 6.11 | 560667 |
| Oct 22, 2025 | M -- (Common Stock) | 22895 | 6.11 | 570238 |
| Oct 22, 2025 | M -- (Common Stock) | 30049 | 6.11 | 577392 |
| Oct 22, 2025 | M -- (Common Stock) | 33532 | 6.11 | 580875 |
| Oct 17, 2025 | Sell -- (Common Stock) | 10225 | 31.46 | 547343 |
| Oct 17, 2025 | Sell -- (Common Stock) | 200 | 34 | 547343 |
| Oct 17, 2025 | M -- (Common Stock) | 200 | 6.11 | 547543 |
| Oct 17, 2025 | M -- (Common Stock) | 10225 | 6.11 | 557568 |
| Oct 16, 2025 | Sell -- (Common Stock) | 14775 | 31.11 | 547343 |
| Oct 16, 2025 | M -- (Common Stock) | 14775 | 6.11 | 562118 |
| Sep 30, 2025 | Sell -- (Common Stock) | 7793 | 29.7 | 547343 |
| Sep 30, 2025 | M -- (Common Stock) | 7793 | 6.11 | 555136 |
| Sep 27, 2025 | Sell -- (Common Stock) | 17207 | 28.85 | 547343 |
| Sep 27, 2025 | M -- (Common Stock) | 17207 | 6.11 | 564550 |
| Aug 28, 2025 | Sell -- (Common Stock) | 7426 | 25.01 | 547343 |
| Aug 28, 2025 | M -- (Common Stock) | 7426 | 6.11 | 554769 |
| Aug 27, 2025 | Sell -- (Common Stock) | 17574 | 24.96 | 547343 |
| Aug 27, 2025 | M -- (Common Stock) | 17574 | 6.11 | 564917 |
| Aug 21, 2025 | Sell -- (Common Stock) | 25000 | 22.75 | 547343 |
| Aug 21, 2025 | M -- (Common Stock) | 25000 | 6.11 | 572343 |
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