X0306 4/A 2021-05-10 2021-05-10 0 0001692819 Vistra Corp. VST 0001262163 MORGAN CURTIS A 6555 SIERRA DRIVE IRVING TX 75039 1 1 0 0 CEO Common Stock 2021-05-06 4 P 0 61730 15.885 A 757157 D The original Form 4 filed on May 10, 2021 inadvertently reflected the transaction as a disposition instead of an acquisition. Represents a weighted-average price. These shares were purchased in multiple transactions at prices ranging from $15.86 to $15.92, 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 purchased at each price within the range. /s/ Yuki Whitmire, as Attorney-in-Fact 2021-05-10