Vistra files 8-K: shareholder vote results

Item 5.07. Submission of Matters to a Vote of Security Holders

On April 29, 2026, the Company held its Annual Meeting, at which a quorum was present. The final voting results regarding each proposal are set forth in the following tables.

Proposal One - Election of Directors - Voting results for

Proposal One were as follows:

Scott B. Helm:

Hilary E. Ackermann:

Arcilia C. Acosta:

Gavin R. Baiera:

Paul M. Barbas:

James A. Burke:

Lisa Crutchfield:

Julie A. Lagacy:

John W. (Bill) Pitesa:

John R. (J. R.) Sult:

Robert C. Walters:

As a result, Scott B. Helm, Hilary E. Ackermann, Arcilia C. Acosta, Gavin R. Baiera, Paul M. Barbas, James A. Burke, Lisa Crutchfield, Julie A. Lagacy, John W. (Bill)

Pitesa, John R. (J. R.) Sult, and Robert C. Walters were elected to the Board.

Proposal Two - Approval, on an Advisory Basis, of 2025 Named Executive

Officer Compensation . Voting results were as follows:

As a result, the compensation of the named executive officers was approved on an advisory basis.

Proposal Three - Ratification of the Appointment of Deloitte &

Touche LLP as the Company’s Independent Registered Public Accounting Firm for the Year Ending December 31, 2026 . Voting results were as follows:

As a result, the Company’s appointment of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2026 was ratified.

authorized.

Dated: May 4, 2026 VISTRA CORP.

Name: Yuki Whitmire Title: Vice President, Associate General Counsel, and Corporate Secretary