Ameren (NYSE: AEE) executive Schukar sells 4,975 shares under 10b5-1

Rhea-AI Filing Summary

Ameren Corp executive Shawn E. Schukar reported multiple stock transactions. He sold 4,975 shares of Ameren common stock in an open-market sale at $111.84 per share pursuant to a Rule 10b5-1 trading plan, leaving him with 56,830 directly held shares.

On February 27, 2026, 3,148 shares were disposed of at $113.28 per share to cover tax withholding obligations tied to vesting performance share units and restricted stock units. As of February 28, 2026, he also held an estimated 3,153 share equivalents indirectly through the Ameren Corporation Savings Investment Plan.

Insider Trade Summary

Net Seller: 4,975 shares ($556,404)

Net Sell 3 txns

Insider Schukar Shawn E

Role Insider

Sold 4,975 shs ($556K)

Type	Security	Shares	Price	Value
Sale	Common Stock, $.01 Par Value	4,975	$111.84	$556K
Tax Withholding	Common Stock, $.01 Par Value	3,148	$113.28	$357K
holding	Common Stock, $.01 Par Value	--	--	--

Holdings After Transaction: Common Stock, $.01 Par Value — 56,830 shares (Direct); Common Stock, $.01 Par Value — 3,153 shares (Indirect, By 401(K))

Footnotes (1)

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 February 28, 2026. Shares withheld by the issuer to satisfy tax withholding obligations arising in connection with the vesting of performance share units and restricted stock units. Shares sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Form 4 Insider Transactions: What Each Field Means →

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^*

Schukar Shawn E

(Last) (First) (Middle)

P.O. BOX 66149

(Street)

ST. LOUIS MO 63166-6149

(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
	Officer (give title below)	X	Other (specify below)
			Chmn & President of Subsidiary

3. Date of Earliest Transaction (Month/Day/Year)
02/27/2026

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								3,153(1)	I	By 401(K)
Common Stock, $.01 Par Value	02/27/2026		F		3,148	D	$113.28	61,805(2)	D
Common Stock, $.01 Par Value	03/03/2026		S		4,975	D	$111.84	56,830(3)	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 February 28, 2026.

2. Shares withheld by the issuer to satisfy tax withholding obligations arising in connection with the vesting of performance share units and restricted stock units.

3. Shares sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Remarks:

	Jonathan T. Shade, Deputy Corp. Secy. for Ameren Corporation, attorney-in-fact for Shawn E. Schukar	03/03/2026
	** 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 transactions did Ameren (AEE) executive Shawn Schukar report?

Shawn E. Schukar reported an open-market sale of 4,975 Ameren shares at $111.84 each, plus a 3,148-share tax-withholding disposition at $113.28. He also reported indirect holdings through the Ameren Corporation Savings Investment Plan as of February 28, 2026.

How many Ameren (AEE) shares did Shawn Schukar sell in the open market?

He sold 4,975 shares of Ameren common stock in an open-market transaction at $111.84 per share. This transaction was executed under a Rule 10b5-1 trading plan adopted by the reporting person, indicating a pre-arranged selling program rather than a discretionary trade.

What is the purpose of the 3,148-share disposition reported for Ameren (AEE)?

The 3,148-share disposition was to satisfy tax withholding obligations from vesting performance share units and restricted stock units. Shares were withheld by Ameren at $113.28 per share, so this transaction reflects a tax-related settlement rather than an open-market sale by the executive.

How many Ameren (AEE) shares does Shawn Schukar hold after these transactions?

Following the reported transactions, he directly holds 56,830 Ameren common shares. In addition, he has an estimated 3,153 share equivalents indirectly through the unitized stock fund in the Ameren Corporation Savings Investment Plan as of February 28, 2026.

Was the Ameren (AEE) insider sale made under a Rule 10b5-1 plan?

Yes. The 4,975-share open-market sale at $111.84 per share was executed pursuant to a Rule 10b5-1 trading plan. Such plans allow insiders to schedule trades in advance, providing a structured way to transact regardless of subsequent material nonpublic information.

What type of ownership does Shawn Schukar report for his Ameren (AEE) holdings?

He reports both direct and indirect ownership. Direct ownership covers common shares he personally holds, including those affected by the sale and tax withholding. Indirect ownership consists of estimated share equivalents in the Ameren Corporation Savings Investment Plan’s unitized stock fund as of February 28, 2026.