0001002910 2026-08-04 2026-08-04 0001002910 1 2026-08-04 2026-08-04 0001002910 2 2026-08-04 2026-08-04 iso4217:USD pure shares S-3 424B5 EX-FILING FEES 333-297949 0001002910 AMEREN CORP N/A N/A S-3 AMEREN CORP false Equity Ameren Corporation's Common Stock, par value $.01 per share true 2000000000 2000000000.00 0.0001381 276200.00 Equity Ameren Corporation's Common Stock, par value $.01 per share true 266700000.00 S-3 333-297949 2026-08-04 40831.77 2266700000.00 276200.00 0.00 0.00 276200.00 These "Calculation of Filing Fee Tables" shall be deemed to update the "Calculation of Filing Fee Tables" exhibit in Ameren Corporation's Registration Statement on Form S-3 (File No. 333-297949), which was filed on August 4, 2026 (the "Registration Statement"). The prospectus supplement to which this exhibit is attached is a final prospectus for the related offering. Pursuant to Rule 415(a)(6) under the Securities Act of 1933, as amended (the "Securities Act"), there is included on this registration statement shares of Ameren Corporation Common Stock, $.01 par value, having a gross sales price of up to $266,700,000 that were previously registered for offer and sale, but not sold, in connection with Ameren Corporation's Equity Distribution Sales Agreement, dated May 12, 2021, as amended and supplemented, including by the First Amendment to Equity Distribution Sales Agreement, dated August 7, 2025 (as so amended and supplemented, the "Sales Agreement"), pursuant to the Registration Statement, and for which an aggregate filing fee of $40,831.77 with respect to such unsold shares was paid in connection with the filing with the Securities and Exchange Commission of an earlier prospectus supplement (which shares were included on the Registration Statement). Pursuant to Rule 415(a)(6) under the Securities Act, the filing fee related to such unsold shares will continue to be applied to the offer and sale of such unsold shares pursuant to the Sales Agreement. The filing fee of $276,200.00 being paid herewith relates to the newly registered shares of Ameren Corporation Common Stock, $.01 par value having an aggregate offering price of up to $2,000,000,000. 2266700000.00 true