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Ameren Corp (AEE) SVP Seidler has 982 shares withheld for taxes

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

AMEREN CORP senior vice president Eric V. Seidler reported a tax-related share disposition. On February 27, he had 982 common shares withheld by the issuer at $113.28 per share to cover tax obligations from vested performance and restricted stock units. After this, he directly owned 14,041 common shares, plus an estimated 1,793 share equivalents held indirectly through the Ameren Corporation Savings Investment Plan as of February 28, 2026.

Positive

  • None.

Negative

  • None.

Insights

Routine tax-withholding on vested awards; no open-market selling.

The filing shows Eric V. Seidler, an Ameren subsidiary senior vice president, had 982 common shares withheld on February 27, 2026. The code F and footnote explain this was to satisfy tax withholding from vested performance share and restricted stock units.

This type of transaction is a standard administrative step in equity compensation, not an open-market sale. After the withholding, Seidler held 14,041 common shares directly and 1,793 share equivalents indirectly via the Ameren Corporation Savings Investment Plan as of February 28, 2026.

Because the transaction is tax-driven and not discretionary buying or selling, its standalone impact on an investment thesis is limited. Subsequent company filings will provide broader context on executive ownership trends and overall governance.

Insider Seidler Eric V
Role SVP of Subsidiary
Type Security Shares Price Value
Tax Withholding Common Stock, $.01 Par Value 982 $113.28 $111K
holding Common Stock, $.01 Par Value -- -- --
Holdings After Transaction: Common Stock, $.01 Par Value — 14,041 shares (Direct); Common Stock, $.01 Par Value — 1,793 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.
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).
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*
Seidler Eric V
(Last) (First) (Middle)
1901 CHOUTEAU AVENUE
(Street)
SAINT 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 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 1,793(1) I By 401(k)
Common Stock, $.01 Par Value 02/27/2026 F 982 D $113.28 14,041(2) 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.
Remarks:
Jonathan T. Shade, Deputy Corp. Secy. for Ameren Corporation, attorney-in-fact for Eric V. Seidler 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Ameren Corp (AEE) report for Eric V. Seidler?

Ameren reported that SVP Eric V. Seidler had 982 common shares withheld on February 27, 2026, to cover tax obligations from vested performance and restricted stock units, a routine equity compensation-related disposition rather than an open-market sale.

Was the Ameren Corp (AEE) Form 4 transaction an open-market sale by Eric V. Seidler?

No, the Form 4 shows a tax-withholding disposition, not an open-market sale. Shares were withheld by Ameren to satisfy tax liabilities triggered when Seidler’s performance share units and restricted stock units vested on February 27, 2026.

How many Ameren Corp (AEE) shares did Eric V. Seidler dispose of for taxes?

Eric V. Seidler had 982 Ameren common shares withheld at $113.28 per share. This withholding satisfied tax obligations from the vesting of performance share units and restricted stock units, according to the Form 4 disclosure and accompanying footnote F2.

What is Eric V. Seidler’s Ameren Corp (AEE) share ownership after the reported Form 4 transaction?

After the tax-withholding transaction, Seidler directly owned 14,041 Ameren common shares. He also held an estimated 1,793 share equivalents indirectly through the unitized stock fund in the Ameren Corporation Savings Investment Plan as of February 28, 2026.

How are Ameren Corp (AEE) shares held indirectly by Eric V. Seidler reported?

Indirect holdings are reported as estimated share equivalents in a unitized stock fund within the Ameren Corporation Savings Investment Plan. As of February 28, 2026, the Form 4 indicates Seidler held approximately 1,793 such share equivalents, classified as indirect ownership by 401(k).

What does transaction code F mean in the Ameren Corp (AEE) Form 4 for Eric V. Seidler?

Transaction code F indicates payment of exercise price or tax liability by delivering securities. In this case, Ameren withheld 982 shares to cover Seidler’s tax obligations arising from the vesting of performance share units and restricted stock units on February 27, 2026.