X0306 4 2022-02-25 0 0001692819 Vistra Corp. VST 0001729598 DOBRY ELIZABETH CHRISTINE 6555 SIERRA DRIVE IRVING TX 75039 0 1 0 0 SVP and Controller Common Stock 2022-02-25 4 F 0 696 21.90 D 27133 D Common Stock 2022-02-25 4 F 0 276 21.90 D 26857 D Common Stock 2022-02-25 4 F 0 314 21.90 D 26543 D This transaction represents the withholding by the Issuer of shares to pay taxes in connection with the vesting of performance stock units. The timing and amount of the transaction were determined by the terms of the applicable performance 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. /s/ Yuki Whitmire, as Attorney-in-Fact 2022-03-01