Peter A. Thompson, Director at Sionna Therapeutics, Inc. (SION), sold 55,345 shares at $44.68 ($2.5M) on 2026-04-17, disclosed to the SEC on 2026-04-21.
Scheduled sale ($2.5M) by Director under a pre-arranged 10b5-1 plan. Pre-set trade — not a discretionary signal on the stock.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $44.68 | 52,397 | $2.3M | 94.7% |
| 2 | $44.52 | 2,948 | $131K | 5.3% |
| Total | $44.67 avg | 55,345 | $2.5M | 100% |
| Filing → |
| SION | SELL | 2026-05-29 | $4K | — | Filing → |
| SION | SELL | 2026-05-11 | $13.4M | — | Filing → |
| SION | SELL | 2026-04-16 | $22.9M | — | Filing → |