ST. LOUIS, Feb. 27, 2023 /PRNewswire/ -- Union Electric Company, doing business as Ameren Missouri, a subsidiary of Ameren Corporation AEE, announced today the pricing of a public offering of $500 million aggregate principal amount of 5.45% first mortgage bonds due 2053 at 99.794% of their principal amount. The transaction is expected to close on March 13, 2023, subject to the satisfaction of customary closing conditions.