Booth Bruce's Form 4 filing
Sionna Therapeutics, Inc. (SION) · filed Oct 20, 2025
- Accession no.
- 0001451612-25-000010
- Filed
- Oct 20, 2025
- Trade date
- Oct 16-20, 2025
- Filing delay
- 4 days
- Rule 10b5-1 plan
- Checked
This filing lists 18 non-derivative transactions. Open-market sales total $9.25M. 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 |
|---|---|
| Booth BruceCIK 0001451612 | 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 |
|---|---|---|---|---|---|---|---|---|
| Oct 16, 2025 | Common Stock | SSaleDisposed | −8,596 | $30.15F2 | −$259,169.4 | 2,610,589 | Indirect | |
| Oct 16, 2025 | Common Stock | SSaleDisposed | −1,804 | $30.15F2 | −$54,390.6 | 749,860 | Indirect | |
| Oct 16, 2025 | Common Stock | SSaleDisposed | −45,117 | $31.69F6 | −$1,429,757.73 | 2,565,472 | Indirect | |
| Oct 16, 2025 | Common Stock | SSaleDisposed | −9,470 | $31.69F6 | −$300,104.3 | 740,390 | Indirect | |
| Oct 16, 2025 | Common Stock | SSaleDisposed | −73,296 | $32.84F7 | −$2,407,040.64 | 2,492,176 | Indirect | |
| Oct 16, 2025 | Common Stock | SSaleDisposed | −15,384 | $32.84F7 | −$505,210.56 | 725,006 | Indirect | |
| Oct 16, 2025 | Common Stock | SSaleDisposed | −12,888 | $33.38F8 | −$430,201.44 | 2,479,288 | Indirect | |
| Oct 16, 2025 | Common Stock | SSaleDisposed | −2,705 | $33.38F8 | −$90,292.9 | 722,301 | Indirect | |
| Oct 17, 2025 | Common Stock | SSaleDisposed | −28,821 | $32.10F9 | −$925,154.1 | 2,450,467 | Indirect | |
| Oct 17, 2025 | Common Stock | SSaleDisposed | −6,049 | $32.10F9 | −$194,172.9 | 716,252 | Indirect | |
| Oct 17, 2025 | Common Stock | SSaleDisposed | −21,451 | $32.71F10 | −$701,662.21 | 2,429,016 | Indirect | |
| Oct 17, 2025 | Common Stock | SSaleDisposed | −4,503 | $32.71F10 | −$147,293.13 | 711,749 | Indirect | |
| Oct 17, 2025 | Common Stock | SSaleDisposed | −248 | $33.47F11 | −$8,300.56 | 2,428,768 | Indirect | |
| Oct 17, 2025 | Common Stock | SSaleDisposed | −52 | $33.47F11 | −$1,740.44 | 711,697 | Indirect | |
| Oct 20, 2025 | Common Stock | SSaleDisposed | −20,485 | $31.79F12 | −$651,218.15 | 2,408,283 | Indirect | |
| Oct 20, 2025 | Common Stock | SSaleDisposed | −4,300 | $31.79F12 | −$136,697 | 707,397 | Indirect | |
| Oct 20, 2025 | Common Stock | SSaleDisposed | −25,788 | $32.33F13 | −$833,726.04 | 2,382,495 | Indirect | |
| Oct 20, 2025 | Common Stock | SSaleDisposed | −5,412 | $32.33F13 | −$174,969.96 | 701,985 | 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.
- F2
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.14 to $30.74 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder 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 within the ranges set forth in footnotes (2), (6), (7), (8), (9), (10), (11), (12) and (13).
Referenced by the price of 2 transactions in Table I.
- F6
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.21 to $32.205 inclusive.
Referenced by the price of 2 transactions in Table I.
- F7
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.21 to $33.205 inclusive.
Referenced by the price of 2 transactions in Table I.
- F8
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.21 to $33.86 inclusive.
Referenced by the price of 2 transactions in Table I.
- F9
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.325 to $32.32 inclusive.
Referenced by the price of 2 transactions in Table I.
- F10
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.335 to $33.25 inclusive.
Referenced by the price of 2 transactions in Table I.
- F11
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.47 to $33.475 inclusive.
Referenced by the price of 2 transactions in Table I.
- F12
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.06 to $32.05 inclusive.
Referenced by the price of 2 transactions in Table I.
- F13
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.06 to $32.59 inclusive.
Referenced by the price of 2 transactions in Table I.