Coulter James G's Form 4 filing
Sionna Therapeutics, Inc. (SION) · filed Jan 26, 2026
- Accession no.
- 0001999371-26-001696
- Filed
- Jan 26, 2026, 5:24 PM ET
- Trade date
- Jan 22, 2026
- Filing delay
- 4 days
- Rule 10b5-1 plan
- Not checked
This filing lists 1 non-derivative transaction. Open-market sales total $10.0M. It was filed 4 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 |
|---|---|
| Coulter James GCIK 0001099776 | 10% Owner |
| Winkelried JonCIK 0001366946 | 10% Owner |
| TPG GP A, LLCCIK 0001903793 | 10% Owner |
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 |
|---|---|---|---|---|---|---|---|---|
| Jan 22, 2026 | Common Stock | SSaleDisposed | −250,000 | $40.00 | −$10,000,000 | 6,494,962 | 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.
Remarks
(5) The Reporting Persons are jointly filing this Form 4 pursuant to Rule 16a-3(j) under the Exchange Act. (6) Gerald Neugebauer is signing on behalf of Messrs. Coulter and Winkelried pursuant to authorization and designation letters dated January 10, 2024, which were previously filed with the Securities and Exchange Commission.