X0306 4 2020-10-02 0 0001692819 Vistra Corp. VST 0001728921 MUSCATO STEPHEN J 6555 SIERRA DRIVE IRVING TX 75039 0 1 0 0 EVP & Chief Commercial Officer Common Stock 2020-10-02 4 F 0 3009 17.99 D 85613 D 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 2020-10-06