| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Kirby Carrie Lee | EVP and Chief Admin. Officer | 6555 SIERRA DRIVE, IRVING | /s/ Daniela Gutierrez, as Attorney-in-Fact | 24 Nov 2025 | 0001703633 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | VST | Common Stock | Tax liability | $31,794 | -182 | -0.08% | $174.69 | 218,057 | 20 Nov 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | This transaction represents the withholding by the Issuer of shares to pay taxes due under the restricted stock units. The timing and amount of the transaction were determined by the terms of the applicable restricted stock unit award and were not within the control of the Reporting Person. |