Peter A. Thompson, Director at Sionna Therapeutics, Inc. (SION), sold 101 shares at $44.49 ($4K) on 2026-05-27, disclosed to the SEC on 2026-05-29.
Scheduled sale ($4k) 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.
| Filing → |
| SION | SELL | 2026-05-11 | $13.4M | — | Filing → |
| SION | SELL | 2026-04-21 | $2.5M | — | Filing → |
| SION | SELL | 2026-04-16 | $22.9M | — | Filing → |