Ameren (NYSE: AEE) awards 2,520 stock units to subsidiary chief

Rhea-AI Filing Summary

AMEREN CORP executive Aaron P. Melda, Chairman & President of a subsidiary, reported an acquisition of 2,520 shares of common stock at a price of $0.00 per share as a grant or award. These restricted stock units were granted under Ameren's 2022 Omnibus Incentive Compensation Plan and are scheduled to vest on a payment date in 2029, which will be no later than March 15, 2029, subject to the plan and award terms. Following this grant and related accrued dividend equivalents, Melda’s directly reported holdings increased to 6,251 shares, while an estimated 4 share equivalents are held indirectly in a unitized stock fund within the Ameren Corporation Savings Investment Plan.

Insights

Equity compensation analyst

Routine equity grant increases Ameren executive’s stock-based compensation.

The filing shows Aaron P. Melda received 2,520 restricted stock units at $0.00 per share as a compensation grant. This is a non-market transaction under Ameren’s 2022 Omnibus Incentive Compensation Plan rather than an open-market purchase.

The units are scheduled to vest on a payment date in 2029, no later than March 15, 2029, so their ultimate value depends on Ameren’s share price and continued service or other plan conditions. The holding entry for 4 share equivalents in a 401(k) stock fund is a small, administrative update.

Because there are no open-market buys or sells and no derivative exercises, this Form 4 mainly updates long-term incentive holdings and has neutral informational value for shareholders based solely on the disclosed data.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Melda Aaron P

Role Chairman & President of Sub

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, $.01 Par Value	2,520	$0.00	--
holding	Common Stock, $.01 Par Value	--	--	--

Holdings After Transaction: Common Stock, $.01 Par Value — 6,251 shares (Direct, null); Common Stock, $.01 Par Value — 4 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 June 30, 2026. 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. Amount includes 26 accrued dividend equivalents acquired during the second quarter of 2026 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan.

Key Figures

RSU grant size: 2,520 shares Grant price: $0.00 per share Direct holdings after grant: 6,251 shares +3 more

6 metrics

RSU grant size 2,520 shares Restricted stock units granted at $0.00 per share

Grant price $0.00 per share Compensation grant, not open-market purchase

Direct holdings after grant 6,251 shares Total common stock reported following the award, including dividend equivalents

Indirect 401(k) share equivalents 4 share equivalents Estimated units in Ameren stock fund as of June 30, 2026

Dividend equivalents 26 equivalents Accrued during Q2 2026 via dividend reinvestment on RSUs

Vesting outside date March 15, 2029 Latest possible payment date for RSU vesting under the plan

Key Terms

unitized stock fund, restricted stock units, 2022 Omnibus Incentive Compensation Plan, dividend equivalents, +1 more

5 terms

unitized stock fund financial

"estimated number of share equivalents held by the reporting person in the unitized stock fund included in the Ameren Corporation Savings Investment Plan"

restricted stock units financial

"These restricted stock units were granted under the issuer's 2022 Omnibus Incentive Compensation Plan"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2022 Omnibus Incentive Compensation Plan financial

"granted under the issuer's 2022 Omnibus Incentive Compensation Plan (the "Plan")"

dividend equivalents financial

"Amount includes 26 accrued dividend equivalents acquired during the second quarter of 2026"

Payments tied to employee or contractor equity awards that mirror the cash dividends paid on the company’s stock; they give the holder the same economic benefit as owning the shares without transferring actual shares—often paid in cash or additional award units when the award becomes payable. Investors care because these payments affect a company’s compensation costs, cash flow and potential share dilution, and they signal how management is being rewarded and aligned with shareholders.

payment date financial

"scheduled to vest upon the payment date in 2029, which shall be no later than March 15, 2029"

The payment date is the day when you actually receive money from a financial transaction, like getting your paycheck or the interest from a savings account. It matters because it tells you when the funds will be available to spend or use. Think of it as the day your paycheck hits your bank account, so you know when you can access the money.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/06/2026 - 04:35 PM Accepted by SEC EDGAR 07/06/2026 - 04:34 PM Learn about SEC filing dates

FAQ

What did Ameren (AEE) executive Aaron P. Melda report in this Form 4?

Aaron P. Melda reported receiving 2,520 restricted stock units as a grant at $0.00 per share. The filing also shows updated direct holdings of 6,251 shares and an estimated 4 share equivalents held indirectly in a 401(k) stock fund.

Is the Ameren (AEE) transaction an open-market buy or sell?

The transaction is not an open-market buy or sell; it is a grant or award acquisition coded “A.” Shares were received at $0.00 per share under Ameren’s 2022 Omnibus Incentive Compensation Plan as part of equity-based compensation, rather than through market trading.

When do Aaron P. Melda’s Ameren restricted stock units vest?

The restricted stock units granted to Aaron P. Melda are scheduled to vest on a payment date in 2029. That payment date must occur no later than March 15, 2029, and vesting remains subject to the terms of Ameren’s 2022 Omnibus Incentive Compensation Plan and the applicable award agreement.

How many Ameren shares does Aaron P. Melda hold after this Form 4?

After this grant, Aaron P. Melda’s directly reported holdings are 6,251 shares, including 26 accrued dividend equivalents for restricted stock units. He also has an estimated 4 share equivalents held indirectly through a unitized stock fund in the Ameren Corporation Savings Investment Plan.

What is the significance of the dividend equivalents mentioned in the Ameren Form 4?

The filing states that the reported amount includes 26 accrued dividend equivalents. These were acquired during the second quarter of 2026 through a dividend reinvestment feature attached to previously granted restricted stock units under Ameren’s 2022 Omnibus Incentive Compensation 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).

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^*

Melda Aaron P

(Last) (First) (Middle)

1901 CHOUTEAU AVENUE

(Street)

ST LOUIS MISSOURI 63103

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Chairman & President of Sub

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

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

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

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

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								4(1)	I	By 401(k)
Common Stock, $.01 Par Value	07/01/2026		A		2,520(2)	A	$0	6,251(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 June 30, 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. Amount includes 26 accrued dividend equivalents acquired during the second quarter of 2026 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan.

Remarks:

	Jonathan T. Shade, Deputy Corp. Secy. for Ameren Corporation, attorney-in-fact for Aaron P. Melda	07/06/2026
	** 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.
* Form 4: SEC 1474 (03-26)