S-3 424B5 EX-FILING FEES 333-274977 0001002910 AMEREN CORP N/A N/A 0001002910 2025-08-06 2025-08-06 0001002910 1 2025-08-06 2025-08-06 0001002910 2 2025-08-06 2025-08-06 iso4217:USD xbrli:pure xbrli:shares

Calculation of Filing Fee Tables

S-3

AMEREN CORP

Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable

Security Type

Security Class Title

Fee Calculation or Carry Forward Rule

Amount Registered

Proposed Maximum Offering Price Per Unit

Maximum Aggregate Offering Price

Fee Rate

Amount of Registration Fee

Carry Forward Form Type

Carry Forward File Number

Carry Forward Initial Effective Date

Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward

Newly Registered Securities
Fees to be Paid 1 Equity Ameren Corporation Common Stock, $.01 par value 457(r) 1,250,000,000 $ 1,250,000,000.00 0.0001531 $ 191,375.00
Fees Previously Paid
Carry Forward Securities
Carry Forward Securities 2 Equity Ameren Corporation Common Stock, $.01 par value 415(a)(6) $ 232,210,000.00 S-3 333-274977 10/13/2023 $ 25,589.54

Total Offering Amounts:

$ 1,482,210,000.00

$ 191,375.00

Total Fees Previously Paid:

$ 0.00

Total Fee Offsets:

$ 0.00

Net Fee Due:

$ 191,375.00

Offering Note

1

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. 333-274977), which was filed on October 13, 2023 (the "Registration Statement").

2

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 $232,210,000 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 (the "Sales Agreement"), pursuant to the Registration Statement, and for which an aggregate filing fee of $25,589.54 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 $191,375.00 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 $1,250,000,000.

Table 2: Fee Offset Claims and Sources ☑Not Applicable
Registrant or Filer Name Form or Filing Type File Number Initial Filing Date Filing Date Fee Offset Claimed Security Type Associated with Fee Offset Claimed Security Title Associated with Fee Offset Claimed Unsold Securities Associated with Fee Offset Claimed Unsold Aggregate Offering Amount Associated with Fee Offset Claimed Fee Paid with Fee Offset Source
Rules 457(b) and 0-11(a)(2)
Fee Offset Claims N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Fee Offset Sources N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Rule 457(p)
Fee Offset Claims N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Fee Offset Sources N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Table 3: Combined Prospectuses ☑Not Applicable

Security Type

Security Class Title

Amount of Securities Previously Registered

Maximum Aggregate Offering Price of Securities Previously Registered

Form Type

File Number

Initial Effective Date

N/A N/A N/A N/A N/A N/A N/A N/A
Narrative Disclosure
The maximum aggregate offering price of the securities to which the prospectus relates is $1,482,210,000.00. The prospectus is a final prospectus for the related offering.