Michael Cloonan, President & CEO at Sionna Therapeutics, Inc. (SION), sold 50,000 shares at $24.96 ($1.2M) on 2025-08-26, disclosed to the SEC on 2025-08-28.
Scheduled sale ($1.2M) by President & CEO under a pre-arranged 10b5-1 plan. Pre-set trade — not a discretionary signal on the stock.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $24.96 | 17,574 | $439K | 35.1% |
| 2 | $24.96 | 17,574 | $439K | 35.1% |
| 3 | $25.01 | 7,426 | $186K | 14.9% |
| 4 | $25.01 | 7,426 | $186K | 14.9% |
| Total | $24.97 avg | 50,000 | $1.2M | 100% |
| Filing → |
| SION | SELL | 2025-09-30 | $1.5M | — | Filing → |
| SION | SELL | 2025-08-21 | $569K | — | Filing → |
| SAGE | SELL | 2019-05-24 | $4.4M | — | Filing → |