Theresa A. Shaw - 09 Oct 2025 Form 4 Insider Report for AMEREN CORP (AEE)

Role: SVP, Finance and CAO
Signature: Jonathan T. Shade, Deputy Corp. Secy. of Ameren Corporation, attorney-in-fact for Theresa A. Shaw
Issuer symbol: AEE
Transactions as of: 09 Oct 2025
Net transactions value: $0
Form type: 4
Filing time: 14 Oct 2025, 09:28:12 UTC
Previous filing: 04 Mar 2025
Next filing: 18 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Shaw Theresa A	SVP, Finance and CAO	1901 CHOUTEAU AVENUE, P.O. BOX 66149, ST. LOUIS	Jonathan T. Shade, Deputy Corp. Secy. of Ameren Corporation, attorney-in-fact for Theresa A. Shaw	14 Oct 2025	0001878241

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AEE	Common Stock, $.01 Par Value	Award	$0	+2,411	+7.8%	$0.000000	33,267	09 Oct 2025	Direct	F2, F3
holding	AEE	Common Stock, $.01 Par Value						884	09 Oct 2025	By 401(k)	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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 September 30, 2025.
F2	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 November 15, 2029, subject to the terms of the Plan and the applicable award agreement issued thereunder.
F3	Amount includes 92 accrued dividend equivalents acquired during the first through third quarters of 2025 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan.