 ST. LOUIS, June 22, 2021 PRNewswire -- Ameren Illinois Company, a subsidiary of Ameren Corporation NYSE: AEE, announced today the pricing of a public offering of 350 million aggregate principal amount of 2.90 first mortgage bonds due 2051 at 99.583 of their principal amount and 100 million aggregate principal amount of 0.375 first mortgage bonds due 2023 at 99.975 of their principal amount. The transactions are expected to close on June 29, 2021, subject to the satisfaction of customary closing conditions, and are not contingent upon each other. 