Vistra Corp.

17. SUPPLEMENTARY FINANCIAL INFORMATION

Other Income, Net

(a)Includes interest, dividends, and net realized and unrealized gains (losses) associated with NDTs of the PJM nuclear facilities. Reported in the East segment.

(b)The $80 million of insurance settlements recognized in 2025 represents the involuntary conversion gain for Martin Lake Incident insurance proceeds reported in the Texas segment. See Note 1 for additional information.

(c)Reported in Corporate and Other.

Inventories by Major Category

Investments

Other Noncurrent Liabilities and Deferred Credits

The balance of other noncurrent liabilities and deferred credits consists of the following:

(a)As of September 30, 2025 and December 31, 2024, the fair value of the assets contained in the Comanche Peak NDT was higher than the carrying value of our ARO related to our nuclear generation plant decommissioning and recorded as a regulatory liability of $691 million and $452 million, respectively.

Supplemental Cash Flow Information

The following table reconciles cash, cash equivalents and restricted cash reported in the condensed consolidated statements of cash flows to the amounts reported in the condensed consolidated balance sheets at September 30, 2025 and December 31, 2024:

The following table summarizes our supplemental cash flow information for the nine months ended September 30, 2025 and 2024. Non-cash investing and financing activities for the nine months ended September 30, 2024 includes activity related to the Energy Harbor Merger (see Note 2 for additional information).

For the nine months ended September 30, 2025 and 2024, we paid federal income tax of $11 million and $2 million, respectively, paid state income taxes of $70 million and $52 million respectively, and received state tax refunds ofzero and $8 million, respectively.