Ameren (NYSE: AEE) SVP Theresa Shaw sells 325 shares in open market

Rhea-AI Filing Summary

Ameren Corp senior vice president and chief accounting and treasury officer Theresa A. Shaw reported an open-market sale of company stock. On February 17, 2026, she sold 325 shares of Ameren common stock at an average price of $111.89 per share. After this sale, she directly held 35,693 Ameren shares. She also had an indirect interest in 895 share equivalents through the Ameren Corporation Savings Investment Plan as of January 31, 2026, reflecting holdings in a unitized stock fund within the 401(k) plan.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Shaw Theresa A

(Last) (First) (Middle)

1901 CHOUTEAU AVENUE

P.O. BOX 66149

(Street)

ST. LOUIS MO 63103

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
AMEREN CORP [ AEE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP and CATO

3. Date of Earliest Transaction (Month/Day/Year)
02/17/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, $.01 Par Value								895(1)	I	By 401(k)
Common Stock, $.01 Par Value	02/17/2026		S		325	D	$111.89	35,693	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

Remarks:

	Jonathan T. Shade, Deputy Corp. Secy. of Ameren Corporation, attorney-in-fact for Theresa A. Shaw	02/19/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Ameren (AEE) disclose for Theresa A. Shaw?

Ameren disclosed that senior vice president and chief accounting and treasury officer Theresa A. Shaw sold 325 shares of common stock in an open-market transaction. The sale occurred on February 17, 2026, and was reported on a Form 4 insider trading filing.

At what price did Theresa A. Shaw sell Ameren (AEE) shares?

Theresa A. Shaw sold Ameren common stock at an average price of $111.89 per share. The Form 4 identifies the transaction as an open-market sale, providing transparency on the price at which the insider reduced her direct shareholdings.

How many Ameren (AEE) shares does Theresa A. Shaw hold after the sale?

Following the reported sale, Theresa A. Shaw directly holds 35,693 shares of Ameren common stock. This remaining position reflects her updated direct ownership after selling 325 shares in the February 17, 2026 open-market transaction.

Does Theresa A. Shaw have indirect Ameren (AEE) holdings through a retirement plan?

Yes. The filing notes she indirectly holds 895 Ameren share equivalents through a unitized stock fund in the Ameren Corporation Savings Investment Plan. This figure represents an estimated number of share equivalents as of January 31, 2026, within the 401(k) plan.

What role does Theresa A. Shaw hold at Ameren (AEE)?

Theresa A. Shaw serves as Ameren’s senior vice president and chief accounting and treasury officer. Her position classifies her as a reporting insider under SEC rules, requiring disclosure of transactions in Ameren common stock through Form 4 filings.

Was the Ameren (AEE) insider transaction a buy or sell action?

The Ameren insider transaction by Theresa A. Shaw was a sale. The Form 4 lists a transaction code “S,” describing it as an open-market or private sale of 325 shares of Ameren common stock on February 17, 2026.