X0508 4 2026-02-05 0 0001002910 AMEREN CORP AEE 0001190105 MOEHN MICHAEL L P.O. BOX 66149 ST. LOUIS MO 63166-6149 0 1 0 0 Group President, Utilities 0 Common Stock, $.01 Par Value 5230 I By 401(K) Common Stock, $.01 Par Value 2026-02-05 4 A 0 9955 0 A 203031 D Common Stock, $.01 Par Value 2026-02-05 4 A 0 22849 0 A 225880 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. These restricted stock units were granted under the issuer's 2022 Omnibus Incentive Compensation Plan (the "Plan") and are scheduled to vest upon the payment date in 2029, which shall be no later than March 15, 2029, subject to the terms of the Plan and the applicable award agreement issued thereunder. Shares acquired upon vesting of previously-granted performance share units. Jonathan T. Shade, Deputy Corp. Secy. of Ameren Corporation, attorney-in-fact for Michael L. Moehn 2026-02-09