Cloonan Michael's Form 4 filing
Sionna Therapeutics, Inc. (SION) · filed Oct 22, 2025
- Accession no.
- 0001704336-25-000008
- Filed
- Oct 22, 2025
- Trade date
- Oct 21, 2025
- Filing delay
- 1 day
- Rule 10b5-1 plan
- Checked
This filing lists 8 non-derivative transactions and 4 derivative transactions. Open-market sales total $3.62M. It was filed 1 day 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 |
|---|---|
| Cloonan MichaelCIK 0001704336 | Director, Officer (President & CEO) |
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 |
|---|---|---|---|---|---|---|---|---|
| Oct 21, 2025 | Common Stock | MOption exerciseAcquired | +13,324 | $6.11 | +$81,409.64 | 560,667 | Direct | |
| Oct 21, 2025 | Common Stock | SSaleDisposed | −13,324 | $34.44F2 | −$458,878.56 | 547,343 | Direct | |
| Oct 21, 2025 | Common Stock | MOption exerciseAcquired | +30,049 | $6.11 | +$183,599.39 | 577,392 | Direct | |
| Oct 21, 2025 | Common Stock | SSaleDisposed | −30,049 | $35.63F3 | −$1,070,645.87 | 547,343 | Direct | |
| Oct 21, 2025 | Common Stock | MOption exerciseAcquired | +22,895 | $6.11 | +$139,888.45 | 570,238 | Direct | |
| Oct 21, 2025 | Common Stock | SSaleDisposed | −22,895 | $36.60F4 | −$837,957 | 547,343 | Direct | |
| Oct 21, 2025 | Common Stock | MOption exerciseAcquired | +33,532 | $6.11 | +$204,880.52 | 580,875 | Direct | |
| Oct 21, 2025 | Common Stock | SSaleDisposed | −33,532 | $37.31F5 | −$1,251,078.92 | 547,343 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Oct 21, 2025 | Common Stock | MOption exerciseDisposed | −13,324 | $0.00 | $0 | 139,618 | Direct | |
| Oct 21, 2025 | Common Stock | MOption exerciseDisposed | −30,049 | $0.00 | $0 | 109,569 | Direct | |
| Oct 21, 2025 | Common Stock | MOption exerciseDisposed | −22,895 | $0.00 | $0 | 86,674 | Direct | |
| Oct 21, 2025 | Common Stock | MOption exerciseDisposed | −33,532 | $0.00 | $0 | 53,142 | Direct |
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.
- F2
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $34.00 to $34.95, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.
Referenced by the price of 1 transaction in Table I.
- F3
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $35.00 to $35.99, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.
Referenced by the price of 1 transaction in Table I.
- F4
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $36.00 to $36.99, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.
Referenced by the price of 1 transaction in Table I.
- F5
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $37.00 to $37.80, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.
Referenced by the price of 1 transaction in Table I.