T. Rowe Price holds 8.1% of Ameren (NYSE: AEE)

Rhea-AI Filing Summary

T. Rowe Price Associates, Inc. reported beneficial ownership of 21,790,077 shares of Ameren Corporation common stock, representing 8.1% of the class as of 12/31/2025.

The firm has sole voting power over 21,085,162 shares and sole dispositive power over 21,789,822 shares, with no shared voting or dispositive power. The position is held in the ordinary course of business and is not for the purpose of changing or influencing control of Ameren. T. Rowe Price Associates also states that filing this report is not an admission of beneficial ownership.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 6)

AMEREN CORPORATION

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

023608102

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 023608102

1

Names of Reporting Persons

T. Rowe Price Associates, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

MARYLAND

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 21,085,162.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 21,789,822.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

21,790,077.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

8.1 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: AMEREN CORPORATION
(b)	Address of issuer's principal executive offices: 1901 CHOUTEAU AVE, MC 1310, ST LOUIS, MO, 63166-6149
Item 2.
(a)	Name of person filing: T. Rowe Price Associates, Inc.
(b)	Address or principal business office or, if none, residence: 1307 Point Street, Baltimore, MD 21231
(c)	Citizenship: Maryland
(d)	Title of class of securities: COMMON STOCK
(e)	CUSIP No.: 023608102
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 21790077
(b)	Percent of class: 8.1 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 21085162
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 21789822
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. T. Rowe Price Associates, Inc. hereby declares and affirms that the filing of Schedule 13G shall not be construed as an admission that Price Associates is the beneficial owner of the securities referred to, which beneficial ownership is expressly denied.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

T. Rowe Price Associates, Inc.

Signature:	Ellen York
Name/Title:	Vice President
Date:	02/17/2026

FAQ

How many Ameren (AEE) shares does T. Rowe Price Associates beneficially own?

T. Rowe Price Associates beneficially owns 21,790,077 Ameren common shares. This stake represents 8.1% of the company’s outstanding common stock as of December 31, 2025, according to the Schedule 13G/A filing.

What percentage of Ameren (AEE) does T. Rowe Price Associates hold?

T. Rowe Price Associates reports holding 8.1% of Ameren’s common stock. This percentage is based on beneficial ownership of 21,790,077 shares as disclosed in the Schedule 13G/A for the event dated December 31, 2025.

Does T. Rowe Price Associates have voting power over its Ameren (AEE) shares?

Yes. T. Rowe Price Associates has sole voting power over 21,085,162 Ameren shares. The filing shows no shared voting power and indicates these securities are held in the ordinary course of business, not to influence control of Ameren.

What dispositive power does T. Rowe Price Associates report over Ameren (AEE) stock?

T. Rowe Price Associates reports sole dispositive power over 21,789,822 Ameren shares. It has no shared dispositive power. Dispositive power means authority to decide whether and how the shares are sold or otherwise disposed of.

Is T. Rowe Price Associates seeking to influence control of Ameren (AEE)?

No. The filing certifies the Ameren shares were acquired and are held in the ordinary course of business, not for changing or influencing control, and not in connection with any transaction designed to have that effect.

What type of SEC filing did Ameren (AEE) trigger with T. Rowe Price Associates’ stake?

The ownership level triggered a Schedule 13G/A filing by T. Rowe Price Associates. This form is used to report beneficial ownership of more than 5% of a company’s shares when held without the purpose of influencing control.