| 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 | 26 Feb 2026 | 0001703633 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | VST | Common Stock | Award | $13,634,179 | +79,444 | +36% | $171.62 | 297,501 | 24 Feb 2026 | Direct | F1 |
| transaction | VST | Common Stock | Tax liability | $5,220,337 | -30,418 | -10% | $171.62 | 267,083 | 24 Feb 2026 | Direct | F2 |
| transaction | VST | Common Stock | Tax liability | $731,788 | -4,264 | -1.6% | $171.62 | 262,819 | 24 Feb 2026 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | Represents performance-based restricted stock units for which the applicable performance criteria for the three-year period ended December 31, 2025 was certified by the Issuer's Social Responsibility and Compensation Committee of the Board of Directors as of February 18, 2026. |
| F2 | This transaction represents the withholding by the Issuer of shares to pay taxes in connection with the vesting of performance-based restricted stock units. The timing and amount of the transaction were determined by the terms of the applicable performance-based restricted stock unit award and were not within the control of the Reporting Person. |
| F3 | This transaction represents the withholding by the Issuer of shares to pay taxes in connection with the vesting of 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. |