ST. LOUIS, Sept. 8, 2026 /PRNewswire/ -- Ameren Corporation (NYSE: AEE) announced today the pricing of a public offering of $900 million aggregate principal amount of junior subordinated notes due 2057 at 100.000% of their principal amount. The transaction is expected to close on September 18, 2026, subject to the satisfaction of customary closing conditions.

The junior subordinated notes will bear interest (i) from and including the date of original issuance to but excluding March 15, 2032, at an annual rate of 6.450% and (ii) from and including March 15, 2032, during each interest reset period at an annual rate equal to the Five-Year Treasury Rate (calculated as described in the prospectus supplement and prospectus relating to the junior subordinated notes) plus 1.868%; provided, that the interest rate during any interest reset period will not reset below 6.450% (which equals the initial interest rate on the junior subordinated notes).

Ameren intends to use the net proceeds of the offering for general corporate purposes, including to repay its short-term debt.

Barclays Capital Inc., BofA Securities, Inc., J.P. Morgan Securities LLC, Morgan Stanley & Co. LLC, MUFG Securities Americas Inc., Truist Securities, Inc., PNC Capital Markets LLC and Scotia Capital (USA) Inc. are acting as joint book-running managers for the offering.

The offering is being made only by means of a prospectus and related prospectus supplement. A prospectus supplement related to the offering will be filed with the Securities and Exchange Commission. Copies of the prospectus and related prospectus supplement for the offering, when available, may be obtained via the Securities and Exchange Commission's website at www.sec.gov or by contacting J.P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717 or by email at [email protected] and [email protected]. This press release does not constitute an offer to sell or a solicitation of an offer to buy the junior subordinated notes and shall not constitute an offer, solicitation or sale in any jurisdiction in which, or to any person to whom, such an offer, solicitation or sale is unlawful.

About Ameren

St. Louis-based Ameren Corporation powers the quality of life for 2.5 million electric customers and more than 900,000 natural gas customers in a 64,000-square-mile area through its Ameren Missouri and Ameren Illinois rate-regulated utility subsidiaries. Ameren Illinois provides electric transmission and distribution service and natural gas distribution service. Ameren Missouri provides electric generation, transmission and distribution service, as well as natural gas distribution service. Ameren Transmission Company of Illinois develops, owns and operates rate-regulated regional electric transmission projects in the Midcontinent Independent System Operator, Inc.

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SOURCE Ameren Corporation