Bruce Booth, Director at Sionna Therapeutics, Inc. (SION), sold 388,401 shares at $31.12 ($11.8M) on 2025-10-15, disclosed to the SEC on 2025-10-15.
Scheduled sale ($11.8M) by Director 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 | $29.98 | 3,511 | $105K | 0.9% |
| 2 | $29.98 | 3,511 | $105K | 0.9% |
| 3 | $29.98 | 16,727 | $501K | 4.2% |
| 4 | $29.98 | 16,727 | $501K | 4.2% |
| 5 | $30.32 | 44,048 | $1.3M | 11.3% |
| 6 | $30.32 | 9,245 |
| $280K |
| 2.4% |
| 7 | $30.32 | 9,245 | $280K | 2.4% |
| 8 | $30.32 | 44,048 | $1.3M | 11.3% |
| 9 | $31.03 | 857 | $27K | 0.2% |
| 10 | $31.03 | 4,082 | $127K | 1.1% |
| 11 | $31.03 | 4,082 | $127K | 1.1% |
| 12 | $29.95 | 105 | $3K | 0.0% |
| 13 | $29.95 | 501 | $15K | 0.1% |
| 14 | $30.37 | 65,726 | $2.0M | 16.9% |
| 15 | $30.37 | 65,726 | $2.0M | 16.9% |
| 16 | $30.37 | 13,795 | $419K | 3.5% |
| 17 | $30.37 | 13,795 | $419K | 3.5% |
| 18 | $31.12 | 30,032 | $935K | 7.9% |
| 19 | $31.12 | 6,303 | $196K | 1.7% |
| 20 | $31.12 | 6,303 | $196K | 1.7% |
| 21 | $31.12 | 30,032 | $935K | 7.9% |
| Total | $30.47 avg | 388,401 | $11.8M | 100% |
| Filing → |
| KYMR | SELL | 2026-06-30 | $3.4M | — | Filing → |
| KYMR | SELL | 2026-06-25 | $34.8M | — | Filing → |
| KYMR | SELL | 2026-06-25 | $44.0M | — | Filing → |