144 0001602114 XXXXXXXX LIVE 0001692819 Vistra Corp. 001-38086 6555 SIERRA DRIVE IRVING TX 75039 214-812-4600 Montemayor Margaret Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

4600 736000.00 337182468 06/02/2026 NYSE Common 11/13/2025 Restricted Stock Vesting Issuer N 3003 11/13/2025 Compensation Common 03/05/2026 Restricted Stock Vesting Issuer N 1597 03/05/2026 Compensation N Margaret Montemayor

6555 Sierra Drive Irving TX 75039

Common 05/27/2026 5000 824799.40 06/02/2026 /s/ Tyler Johnson, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Margaret Montemayor