Ameren issues $400M 5.00% notes due 2036

Ameren Corporation has issued $400 million of 5.00% Senior Notes due 2036.

Rhea-AI Filing Summary

Ameren Corporation has issued $400 million of 5.00% Senior Notes due 2036. These are long-term debt securities that pay a fixed 5.00% interest rate until maturity in 2036, giving Ameren a defined-cost source of capital for the next decade.

Ameren reports that it received approximately $396.6 million in net offering proceeds before expenses at closing. The notes were sold under an existing shelf registration on Form S-3 and a related prospectus supplement, reflecting a planned financing step to support the company’s capital and funding needs.

Insights

Utility credit and capital-structure analyst

Ameren adds $400M of long-term fixed-rate debt at 5.00%, modestly increasing leverage while securing predictable funding to 2036.

Ameren Corporation issued $400 million of 5.00% Senior Notes due 2036, receiving about $396.6 million in net proceeds before expenses. This extends its debt maturity profile with a fixed coupon, which can be important for a regulated utility planning multi‑year capital projects.

The fixed 5.00% rate locks in interest costs on this tranche, limiting exposure to future rate moves. However, total leverage and interest coverage effects depend on how the proceeds are ultimately used and the company’s existing debt stack, which are not detailed here.

Because the notes were issued under a previously effective shelf registration and a February 26, 2026 prospectus supplement, this appears to be a planned financing step rather than an emergency measure. Subsequent quarterly and annual reports will show how this additional debt interacts with cash flows and capital spending plans.

8-K Event Classification

2 items: 8.01, 9.01

2 items

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

FAQ

What type of securities did Ameren Corporation (AEE) issue on March 4, 2026?

Ameren issued $400 million principal amount of 5.00% Senior Notes due 2036. These are long-term debt instruments with a fixed 5.00% interest rate, providing the company with committed funding until their 2036 maturity date.

How much cash did Ameren Corporation (AEE) receive from the 5.00% Senior Notes due 2036?

Ameren received approximately $396.6 million in net offering proceeds before expenses. This is slightly below the $400 million principal, reflecting underwriting discounts or similar offering costs deducted at closing.

When do Ameren Corporation’s new 5.00% Senior Notes mature?

The Ameren 5.00% Senior Notes issued on March 4, 2026 mature in 2036. Investors in these notes will receive the fixed 5.00% interest payments until that 2036 maturity date, when the $400 million principal becomes due.

Under what registration did Ameren Corporation (AEE) offer the 5.00% Senior Notes?

The notes were offered under Ameren’s shelf Registration Statement on Form S-3 (File No. 333-274977). This registration became effective on October 13, 2023 and was used together with a February 26, 2026 prospectus supplement.

Why did Ameren Corporation file this report related to the 5.00% Senior Notes?

The report was filed to include certain documents as exhibits connected with the 5.00% Senior Notes offering. Such filings provide investors with the final transaction terms and contractual details for the newly issued 2036 senior notes.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Understanding 8-K Material Events →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 03/04/2026 - 01:23 PM Learn about SEC filing dates

false 0001002910 0001002910 2026-03-04 2026-03-04 iso4217:USD xbrli:shares iso4217:USD xbrli:shares

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (Date of earliest event reported): March 4, 2026

AMEREN CORPORATION

(Exact name of registrant as specified in its charter)

Missouri	1-14756	43-1723446
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

1901 Chouteau Avenue, St. Louis, Missouri 63103

(Address of principal executive offices and Zip Code)

Registrant’s telephone number, including area code: (314) 621-3222

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, $0.01 par value per share		AEE		New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

ITEM 8.01 Other Events.

On March 4, 2026, Ameren Corporation (“Ameren”) sold $400 million principal amount of its 5.00% Senior Notes due 2036 (the “Notes”). The Notes were offered pursuant to a Registration Statement on Form S-3 (File No. 333-274977), which became effective on October 13, 2023, and a Prospectus Supplement dated February 26, 2026, to a Prospectus dated October 13, 2023. Ameren received net offering proceeds of approximately $396.6 million, before expenses, upon closing of the transaction.

This Current Report on Form 8-K is being filed to report as exhibits certain documents in connection with the offering of the Notes.

ITEM 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number Title

1 Underwriting Agreement, dated February 26, 2026, between Ameren and BNY Mellon Capital Markets, LLC, J.P. Morgan Securities LLC, RBC Capital Markets, LLC, U.S. Bancorp Investments, Inc. and Wells Fargo Securities, LLC, as the several underwriters named therein.

4.1* Indenture, dated as of December 1, 2001, by and between Ameren and The Bank of New York Mellon Trust Company, N.A., as successor trustee, (“Ameren Indenture”) (Exhibit 4.5, File No. 333-81774).

4.2* First Supplemental Indenture, dated as of May 19, 2008, to the Ameren Indenture (June 30, 2008 Form 10-Q, Exhibit 4.1, File No. 1-14756).

4.3 Company Order, dated March 4, 2026, establishing the Notes.

4.4 Global Note.

5.1 Opinion of Stephen C. Lee, Esq., Vice President and Deputy General Counsel of Ameren, regarding the legality of the Notes (including consent).

5.2 Opinion of Morgan, Lewis & Bockius LLP regarding the legality of the Notes (including consent).

104 Cover Page Interactive Data File (formatted as Inline XBRL).

* Incorporated by reference as indicated.

- 2 -

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, Ameren has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	AMEREN CORPORATION
	(Registrant)
	By:	/s/ Leonard P. Singh
	Name:	Leonard P. Singh
	Title:	Executive Vice President and Chief Financial Officer

Date: March 4, 2026 

Filing Exhibits & Attachments

8 documents

Other Documents

• EX-1 EXHIBIT 1 160.7 KB
• EX-4.3 EXHIBIT 4.3 72.1 KB
• EX-4.4 EXHIBIT 4.4 48.4 KB
• EX-5.1 EXHIBIT 5.1 11.3 KB
• EX-5.2 EXHIBIT 5.2 8.9 KB
• EX-101 XBRL TAXONOMY EXTENSION SCHEMA 2.9 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE 33.4 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE 21.8 KB