VST · Vistra Corp.

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 16, 2026.

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 16, 2026.

Represents a weighted-average price. These shares were sold in multiple transactions at prices ranging from $165.00 to $165.04, inclusive. For all transactions reported in this Form 4 utilizing a weighted-average price, the reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 16, 2026.

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 11, 2026.

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026.

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026.

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 02, 2025.

Represents a weighted-average price. These shares were sold in multiple transactions at prices ranging from $160.00 to $160.70, inclusive. For all transactions reported in this Form 4 utilizing a weighted-average price, the reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

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.

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.

In connection with the annual grant of equity awards, the grant of the reported restricted stock units to the Reporting Person was approved by Issuer's Social Responsibility and Compensation Committee of the Board of Directors on February 18, 2026.

In connection with the annual grant of equity awards, the grant of the reported restricted stock units to the Reporting Person was approved by Issuer's Social Responsibility and Compensation Committee of the Board of Directors on February 18, 2026.

In connection with the annual grant of equity awards, the grant of the reported restricted stock units to the Reporting Person was approved by Issuer's Social Responsibility and Compensation Committee of the Board of Directors on February 18, 2026.

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.

In connection with the annual grant of equity awards, the grant of the reported restricted stock units to the Reporting Person was approved by Issuer's Social Responsibility and Compensation Committee of the Board of Directors on February 18, 2026.

In connection with the annual grant of equity awards, the grant of the reported restricted stock units to the Reporting Person was approved by Issuer's Social Responsibility and Compensation Committee of the Board of Directors on February 18, 2026.

In connection with the annual grant of equity awards, the grant of the reported restricted stock units to the Reporting Person was approved by Issuer's Social Responsibility and Compensation Committee of the Board of Directors on February 18, 2026.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 12, 2025. The transactions executed on December 12, 2025 reported hereunder are the final transactions to be executed under the Rule 10b5-1 trading plan.