| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Brown Justin L | President/Southwest Gas Corp. | 8360 S. DURANGO DR., LAS VEGAS | Catherine M. Mazzeo, POA | 23 Feb 2026 | 0001740097 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SWX | Common Stock | Award | $0 | +5,544 | +88% | $0.000000 | 11,865 | 19 Feb 2026 | Direct | F1 |
| transaction | SWX | Common Stock | Award | $0 | +17,378 | +146% | $0.000000 | 29,242 | 19 Feb 2026 | Direct | F2 |
| transaction | SWX | Common Stock | Award | $0 | +8,427 | +29% | $0.000000 | 37,670 | 22 Feb 2026 | Direct | F3 |
| holding | SWX | Common Stock | 10,208 | 19 Feb 2026 | By LLC | ||||||
| holding | SWX | Common Stock | 3,658 | 19 Feb 2026 | By 401(k) | ||||||
| holding | SWX | Common Stock | 210 | 19 Feb 2026 | By Spouse | ||||||
| holding | SWX | Common Stock | 14,586 | 19 Feb 2026 | By Trust |
| Id | Content |
|---|---|
| F1 | Each restricted stock unit represents a contingent right to receive one share of SWX common stock. Restricted stock units vest in three annual installments (40%, 30%, 30%), assuming continued service. |
| F2 | Settled Performance Stock Units delivered to the reporting person three years after grant date as a result of satisfaction of performance goals. |
| F3 | Settled Performance Stock Units delivered to the reporting person as a result of satisfaction of the performance goal for the final vesting condition of the award. |