Michael Cloonan, President & CEO at Sionna Therapeutics, Inc. (SION), sold 50,000 shares at $28.85 ($1.5M) on 2025-09-26, disclosed to the SEC on 2025-09-30.
Scheduled sale ($1.5M) 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 | $28.85 | 17,207 | $496K | 34.1% |
| 2 | $28.85 | 17,207 | $496K | 34.1% |
| 3 | $29.70 | 7,793 | $231K | 15.9% |
| 4 | $29.70 | 7,793 | $231K | 15.9% |
| Total | $29.11 avg | 50,000 | $1.5M | 100% |
| Filing → |
| SION | SELL | 2025-08-28 | $1.2M | — | Filing → |
| SION | SELL | 2025-08-21 | $569K | — | Filing → |
| SAGE | SELL | 2019-05-24 | $4.4M | — | Filing → |