Ameren (AEE) subsidiary chair Schukar reports new stock awards and holdings

Rhea-AI Filing Summary

Ameren Corporation subsidiary chairman and president Shawn E. Schukar reported stock-based awards and holdings. On February 5, 2026, he acquired 2,824 restricted stock units under Ameren’s 2022 Omnibus Incentive Compensation Plan, at a stated price of $0. These units are scheduled to vest on a payment date in 2029, no later than March 15, 2029, subject to the plan and award terms. On the same date he also acquired 5,699 common shares upon vesting of previously granted performance share units, also at a stated price of $0. Following these transactions, he directly held 59,191 and then 64,953 Ameren common shares, which include 63 dividend-equivalent shares credited during the fourth quarter of 2025. Separately, as of January 31, 2026, he indirectly held an estimated 3,151 share equivalents in a unitized Ameren stock fund within the Ameren Corporation Savings Investment Plan through his 401(k).

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

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

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)
02/05/2026

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								3,151(1)	I	By 401(K)
Common Stock, $.01 Par Value	02/05/2026		A		2,824(2)	A	$0	59,191	D
Common Stock, $.01 Par Value	02/05/2026		A		5,699(3)	A	$0	64,953(4)	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.

2. 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 March 15, 2029, subject to the terms of the Plan and the applicable award agreement issued thereunder.

3. Shares acquired upon vesting of previously-granted performance share units.

4. Amount includes 63 accrued dividend equivalents acquired during the fourth quarter of 2025 pursuant to a dividend reinvestment feature of restricted stock units granted under the Plan.

Remarks:

	Jonathan T. Shade, Deputy Corp. Secy. for Ameren Corporation, attorney-in-fact for Shawn E. Schukar	02/09/2026
	** 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).
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FAQ

What insider transactions did Shawn E. Schukar report in Ameren (AEE) stock?

Schukar reported acquiring 2,824 restricted stock units and 5,699 Ameren common shares on February 5, 2026, both at a stated price of $0. The shares came from equity incentives and performance share unit vesting rather than open-market purchases or sales.

When do Shawn E. Schukar’s new Ameren (AEE) restricted stock units vest?

The 2,824 restricted stock units granted to Schukar under Ameren’s 2022 Omnibus Incentive Compensation Plan are scheduled to vest on a payment date in 2029. The filing states this date will be no later than March 15, 2029, subject to plan and award terms.

How many Ameren (AEE) shares does Shawn E. Schukar hold after the reported Form 4 transactions?

After the reported February 5, 2026 transactions, Schukar directly held 64,953 Ameren common shares. This amount includes 63 dividend-equivalent shares accrued during the fourth quarter of 2025 under a dividend reinvestment feature tied to restricted stock units.

What is the source of the 5,699 Ameren (AEE) shares acquired by Shawn E. Schukar?

The 5,699 Ameren common shares were acquired upon vesting of previously granted performance share units. The transaction is reported at a stated price of $0 per share, reflecting an equity award settlement rather than a cash purchase on the open market.

How are Ameren (AEE) shares held for Shawn E. Schukar in the company’s savings plan?

The filing reports an estimated 3,151 share equivalents for Schukar in a unitized Ameren stock fund within the Ameren Corporation Savings Investment Plan. These are held indirectly through his 401(k), based on balances as of January 31, 2026.

What role do dividend equivalents play in Shawn E. Schukar’s Ameren (AEE) share count?

Schukar’s direct holdings include 63 accrued dividend equivalents added during the fourth quarter of 2025. These arose from a dividend reinvestment feature attached to restricted stock units granted under Ameren’s 2022 Omnibus Incentive Compensation Plan, increasing his total share count.