Elena Ridloff, CFO & Head of Corporate Development at Sionna Therapeutics, Inc. (SION), sold 18,420 shares at $25.08 ($462K) on 2025-09-02, disclosed to the SEC on 2025-09-03.
Scheduled sale ($462k) by CFO & Head of Corporate Development 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 | $25.18 | 748 | $19K | 4.1% |
| 2 | $25.08 | 8,836 | $222K | 48.0% |
| 3 | $25.08 | 8,836 | $222K | 48.0% |
| Total | $25.08 avg | 18,420 | $462K | 100% |
| Filing → |
| SION | SELL | 2025-08-28 | $1.1M | — | Filing → |
| SION | SELL | 2025-08-21 | $1.9M | — | Filing → |
| KYMR | SELL | 2025-06-11 | $225K | — | Filing → |