Union Electric Company, doing business as Ameren Missouri, issued a total of $900 million in First Mortgage Bonds. This issuance comprises $450 million of 4.80% First Mortgage Bonds due March 15, 2036, and $450 million of 5.55% First Mortgage Bonds due March 15, 2056. The company received aggregate net offering proceeds of approximately $891.1 million before expenses from the sale. These bonds are secured by a lien on substantially all of the company's permanent, fixed properties, including power houses, plants, transmission systems, and franchises, located in specified counties across Missouri, Illinois, and Iowa. Interest payments for both series of bonds will be made semi-annually on March 15 and September 15, commencing September 15, 2026. The issuance and sale of these bonds have been authorized by a final order from the Missouri Public Service Commission.