Southwest Gas (NYSE: SWX) insider transactions
In the twelve months to 10 November 2026, executives and directors of Southwest Gas reported 2 open-market sales of 5,528 shares ($450,029) and 0 open-market purchases, by 2 people, according to the Form 4 filings they submitted to the SEC.
Latest transactions
| Date | Insider | Role | Transaction | Shares | Price | Held after | Filing |
|---|---|---|---|---|---|---|---|
| 28 September 2026 | Williams Julie M. | SVP/Cont. Improvement and Opt. | Open-market sale | −2,500 | $81.81 | 26,450 | Form 4 |
| 7 May 2026 | Kim Leezie | Director | Grant or award | +1,196 | — | 1,196 | Form 4 |
| 7 May 2026 | Carson Molly R. | Director | Grant or award | +1,196 | — | 1,196 | Form 4 |
| 27 February 2026 | Forsberg Justin S | SVP/Chief Financial Officer | Shares withheld for tax | −520 | $80.02 | 6,862 | Form 4 |
| 27 February 2026 | Gabe Randall P. | SVP/Chief Administrative OFC | Shares withheld for tax | −2,172 | $80.02 | 24,153 | Form 4 |
| 27 February 2026 | Brown Justin L | President/Southwest Gas Corp. | Shares withheld for tax | −3,209 | $87.60 | 34,461 | Form 4 |
| 27 February 2026 | Brown Justin L | President/Southwest Gas Corp. | Shares withheld for tax | −6,838 | $80.02 | 27,623 | Form 4 |
| 27 February 2026 | Mazzeo Catherine M | SVP/Chief Legal/Comp. Officer | Shares withheld for tax | −544 | $80.02 | 16,150 | Form 4 |
| 27 February 2026 | Williams Julie M. | SVP/Cont. Improvement and Opt. | Shares withheld for tax | −3,473 | $80.02 | 28,950 | Form 4 |
| 27 February 2026 | Timperley Amy L. | SVP/Chief Reg. & Public Aff. | Shares withheld for tax | −1,182 | $80.02 | 15,118 | Form 4 |
| 27 February 2026 | Haller Karen S | President and CEO | Shares withheld for tax | −13,105 | $80.02 | 185,798 | Form 4 |
| 22 February 2026 | Brown Justin L | President/Southwest Gas Corp. | Grant or award | +8,427 | — | 37,670 | Form 4 |
| 19 February 2026 | Ruisanchez Carlos | Director | Grant or award | +1,726 | — | 10,693 | Form 4 |
| 19 February 2026 | Sandoval Brian E | Director | Grant or award | +1,726 | — | 3,299 | Form 4 |
| 19 February 2026 | Williams Julie M. | SVP/Cont. Improvement and Opt. | Grant or award | +2,994 | — | 23,598 | Form 4 |
| 19 February 2026 | Williams Julie M. | SVP/Cont. Improvement and Opt. | Grant or award | +8,825 | — | 32,422 | Form 4 |
| 19 February 2026 | Thornton Leslie T | Director | Grant or award | +1,726 | — | 17,201 | Form 4 |
| 19 February 2026 | Sharma Ruby | Director | Grant or award | +1,726 | — | 9,480 | Form 4 |
| 19 February 2026 | Mazzeo Catherine M | SVP/Chief Legal/Comp. Officer | Grant or award | +3,965 | — | 14,461 | Form 4 |
| 19 February 2026 | Mazzeo Catherine M | SVP/Chief Legal/Comp. Officer | Grant or award | +2,233 | — | 16,694 | Form 4 |
Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.
How to read the table
Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.
Where each row comes from
From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Southwest Gas page; the method, in data sources.
Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.