Thompson Peter A.'s Form 4 filing
Sionna Therapeutics, Inc. (SION) · filed Apr 16, 2026
- Accession no.
- 0000947871-26-000447
- Filed
- Apr 16, 2026
- Trade date
- Apr 14-16, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Checked
This filing lists 3 non-derivative transactions. Open-market sales total $22.9M. It was filed 2 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Thompson Peter A.CIK 0001357522 | Director |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Apr 14, 2026 | Common Stock | SSaleDisposed | −47,814 | $44.51 | −$2,128,201.14 | 3,482,888 | Indirect | |
| Apr 15, 2026 | Common Stock | SSaleDisposed | −235,863 | $44.64 | −$10,528,924.32 | 3,247,025 | Indirect | |
| Apr 16, 2026 | Common Stock | SSaleDisposed | −226,906 | $45.34 | −$10,287,918.04 | 3,020,119 | Indirect |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
No transaction price on this filing refers to a footnote.