Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Sionna Therapeutics, Inc. (SION) since 2025 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Sionna Therapeutics, Inc.. Table 2 shows the detailed insider transactions. This company's CIK number is 2036042.
Total stock buying since 2025: $63,410,400.
Total stock sales since 2025: $3,159,744.
Total stock option exercises since 2025: $305,499.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 3,530,000 | $63,410,400 | 135,000 | $3,159,744 | 50,000 | $305,499 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-09 | 0 | $0 | 8,836 | $221,606 | 0 | $0 |
| 2025-08 | 0 | $0 | 126,164 | $2,938,138 | 50,000 | $305,499 |
| 2025-06 | 60,000 | $950,400 | 0 | $0 | 0 | $0 |
| 2025-02 | 3,470,000 | $62,460,000 | 0 | $0 | 0 | $0 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-09-02 | Ridloff Elena (CFO & Head of Corp. Dev.) | Sale | 8,836 | 25.08 | 221,606 |
| 2025-08-29 | Ridloff Elena (CFO & Head of Corp. Dev.) | Sale | 748 | 25.18 | 18,834 |
| 2025-08-28 | Ridloff Elena (CFO & Head of Corp. Dev.) | Sale | 16,098 | 25.97 | 418,065 |
| 2025-08-27 | Ridloff Elena (CFO & Head of Corp. Dev.) | Sale | 3,618 | 25.10 | 90,811 |
| 2025-08-27 | Cloonan Michael (President & CEO) | Sale | 7,426 | 25.01 | 185,716 |
| 2025-08-27 | Cloonan Michael (President & CEO) | Option Ex | 7,426 | 6.11 | 45,372 |
| 2025-08-26 | Ridloff Elena (CFO & Head of Corp. Dev.) | Sale | 3,700 | 25.13 | 92,981 |
| 2025-08-26 | Cloonan Michael (President & CEO) | Sale | 17,574 | 24.96 | 438,647 |
| 2025-08-26 | Cloonan Michael (President & CEO) | Option Ex | 17,574 | 6.11 | 107,377 |
| 2025-08-20 | Ridloff Elena (CFO & Head of Corp. Dev.) | Sale | 17,500 | 22.69 | 397,075 |
| 2025-08-20 | Cloonan Michael (President & CEO) | Sale | 25,000 | 22.75 | 568,750 |
| 2025-08-20 | Cloonan Michael (President & CEO) | Option Ex | 25,000 | 6.11 | 152,750 |
| 2025-08-19 | Ridloff Elena (CFO & Head of Corp. Dev.) | Sale | 34,500 | 21.08 | 727,259 |
| 2025-06-27 | Winkelried Jon | Buy | 60,000 | 15.84 | 950,400 |
| 2025-02-10 | Atlas Venture Associates Opportunity Ii, Llc | Buy | 60,000 | 18.00 | 1,080,000 |
| 2025-02-10 | Orbimed Capital Gp Viii Llc | Buy | 550,000 | 18.00 | 9,900,000 |
| 2025-02-10 | Shah Rajeev M. | Buy | 1,125,000 | 18.00 | 20,250,000 |
| 2025-02-10 | Booth Bruce | Buy | 60,000 | 18.00 | 1,080,000 |
| 2025-02-10 | Winkelried Jon | Buy | 1,125,000 | 18.00 | 20,250,000 |
| 2025-02-10 | Thompson Peter A. | Buy | 550,000 | 18.00 | 9,900,000 |
Insider trading activities including stock purchases, stock sales, and option exercises of SION listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Sionna Therapeutics, Inc. (symbol SION, CIK number 2036042) see the Securities and Exchange Commission (SEC) website.