Ameren Illinois Co 8-K Filing

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Key Financial Figures

• $0.01 — e on which registered Common Stock, $0.01 par value per share AEE New York
• $1.9 billion — he lenders party thereto entered into a $1.9 billion multi-year, senior unsecured revolving
• $1.4 billion — reement") that amended and restated the $1.4 billion multi-year, senior unsecured revolving
• $1.3 billion — he lenders party thereto entered into a $1.3 billion multi-year, senior unsecured revolving
• $1.2 billion — eements") that amended and restated the $1.2 billion multi-year, senior unsecured revolving
• $3.2 billion — . The Amended Credit Agreements provide $3.2 billion of credit cumulatively. The Amended Cr
• $1.9 b — ment was increased from $1.4 billion to $1.9 billion, and the maximum borrowing limits
• $1.0 billion — Missouri Borrowers were increased from $1.0 billion to $1.6 billion for Ameren and from $1.
• $1.6 billion — ers were increased from $1.0 billion to $1.6 billion for Ameren and from $1.0 billion to $1.
• $1.0 billion — ion to $1.6 billion for Ameren and from $1.0 billion to $1.6 billion for Ameren Missouri. Th
• $1.2 billion — ois Credit Agreement was increased from $1.2 billion to $1.3 billion, and the maximum borrow
• $1.3 b — ment was increased from $1.2 billion to $1.3 billion, and the maximum borrowing limits
• $700 million — Illinois Borrowers were increased from $700 million to $800 million for Ameren and from $1.
• $800 million — ers were increased from $700 million to $800 million for Ameren and from $1.0 billion to $1.
• $1.1 billion — ion for Ameren and from $1.0 billion to $1.1 billion for Ameren Illinois. Borrowings by Amer

Filing Documents

• tm2533090d1_8k.htm (8-K) — 74KB
• tm2533090d1_ex10-1.htm (EX-10.1) — 775KB
• tm2533090d1_ex10-2.htm (EX-10.2) — 776KB
• 0001104659-25-119977.txt ( ) — 2177KB
• aee-20251210.xsd (EX-101.SCH) — 4KB
• aee-20251210_def.xml (EX-101.DEF) — 26KB
• aee-20251210_lab.xml (EX-101.LAB) — 36KB
• aee-20251210_pre.xml (EX-101.PRE) — 25KB
• tm2533090d1_8k_htm.xml (XML) — 11KB

01 Entry into a Material Definitive Agreement

ITEM 1.01 Entry into a Material Definitive Agreement. Reference is made to Note 4 – Short-term Debt and Liquidity to the financial statements under Part II, Item 8. Financial Statements and Supplementary Data of the Annual Report on Form 10-K for the year ended December 31, 2024, of registrants Ameren Corporation ("Ameren"), Union Electric Company, doing business as Ameren Missouri ("Ameren Missouri") and Ameren Illinois Company, doing business as Ameren Illinois ("Ameren Illinois") for a discussion of the 2022 Credit Agreements (as defined below). On December 10, 2025, Ameren and Ameren Missouri (together, the "Missouri Borrowers"), JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto entered into a $1.9 billion multi-year, senior unsecured revolving Amended and Restated Credit Agreement (the "Amended Missouri Credit Agreement") that amended and restated the $1.4 billion multi-year, senior unsecured revolving Amended and Restated Credit Agreement, dated as of December 6, 2022, among the parties thereto (the "2022 Missouri Credit Agreement"). Also on December 10, 2025, Ameren and Ameren Illinois (together, the "Illinois Borrowers", and the Illinois Borrowers and the Missouri Borrowers, being, collectively, the "Borrowers"), JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto entered into a $1.3 billion multi-year, senior unsecured revolving Amended and Restated Credit Agreement (the "Amended Illinois Credit Agreement" and together with the Amended Missouri Credit Agreement, the "Amended Credit Agreements") that amended and restated the $1.2 billion multi-year, senior unsecured revolving Amended and Restated Credit Agreement, dated as of December 6, 2022, among the parties thereto (the "2022 Illinois Credit Agreement" and, together with the 2022 Missouri Credit Agreement, in each case, as amended effective April 19, 2023, and extended effective December 6, 2024 to mature on December 6, 2028, the "2022 Credit Agreements"). The Amended C

01 Financial Statements and Exhibits

ITEM 9.01 Financial Statements and Exhibits. (d) Exhibits Exhibit Number Title 10.1 Amended and Restated Credit Agreement, dated as of December 10, 2025, by and among Ameren, Ameren Missouri and JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto. 10.2 Amended and Restated Credit Agreement, dated as of December 10, 2025, by and among Ameren, Ameren Illinois and JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto. 104 Cover Page Interactive Data File (formatted as Inline XBRL). This combined Form 8-K is being filed separately by Ameren Corporation, Union Electric Company and Ameren Illinois Company (each a "registrant"). Information contained herein relating to any individual registrant has been filed by such registrant on its own behalf. No registrant makes any representation as to information relating to any other registrant.

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. The signature for each undersigned company shall be deemed to relate only to matters having reference to such company or its subsidiaries. AMEREN CORPORATION (Registrant) By: /s/ Michael L. Moehn Name: Michael L. Moehn Title: Senior Executive Vice President and Chief Financial Officer UNION ELECTRIC COMPANY (Registrant) By: /s/ Michael L. Moehn Name: Michael L. Moehn Title: Interim Chairman and President, Senior Executive Vice President and Chief Financial Officer AMEREN ILLINOIS COMPANY (Registrant) By: /s/ Michael L. Moehn Name: Michael L. Moehn Title: Senior Executive Vice President and Chief Financial Officer Date: December 10, 2025

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