X0508 4 2026-02-05 0 0001002910 AMEREN CORP AEE 0001377787 Feinberg David Matthew 1901 CHOUTEAU AVENUE ST LOUIS MO 63103 0 1 0 0 EVP, GC & Secretary 0 Common Stock, $.01 Par Value 9 I By 401(k) Common Stock, $.01 Par Value 2026-02-05 4 A 0 4449 0 A 8260 D Represents the estimated number of share equivalents held by the reporting person in the unitized stock fund included in the Ameren Corporation Savings Investment Plan as of January 31, 2026. Amount includes 27 accrued dividend equivalents acquired during the fourth quarter of 2025 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan. Jonathan T. Shade, Deputy Corp. Secy. for Ameren Corporation, attorney-in-fact for David M. Feinberg 2026-02-09