Ameren Illinois, a subsidiary of Ameren Corporation, sold $350 million principal amount of its 5.625% First Mortgage Bonds due 2055 on September 26, 2025, the company said.

1. 01

   Ameren Illinois, a subsidiary of Ameren Corporation, sold $350 million principal amount of its 5.625% First Mortgage Bonds due 2055 on September 26, 2025, the company said.

2. 02

   The company said the bonds are a further issuance of 5.625% First Mortgage Bonds due 2055 that were issued on March 3, 2025, in the principal amount of $350 million.

3. 03

   The company said Ameren Illinois received net offering proceeds of approximately $358.1 million, before expenses, upon closing of the transaction. The bonds were offered under a Form S-3 registration statement that became effective on October 13, 2023 and a September 15, 2025 Prospectus Supplement.

4. 04

   The company said the filing attaches an Underwriting Agreement dated September 15, 2025 and 2 legal opinions related to this 8-K. KeyBanc Capital Markets Inc., TD Securities (USA) LLC and U.S. Bancorp Investments, Inc. are the representatives of the underwriters.

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Original filing

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