X0201 42003-08-29 0001002910 AMEREN CORP AEE 0001184482 LIDDY RICHARD A P. O. BOX 66149, MC-1370 ST. LOUIS MO 63166-6149 1000Common Stock, $.01 Par Value2003-06-305L08644.135A7451DCommon Stock, $.01 Par Value2003-07-155L010943.20A7560DCommon Stock, $.01 Par Value2003-08-294J030042.428A7860DCommon Stock, $.01 Par Value2500INamed on brokerage account with mother.Stock was acquired during the second quarter of 2003 through reinvested dividends.Stock was acquired from July 15 through August 15, 2003 at prices ranging from $41.98 to $43.20.Director CompensationG. L. Waters, Asst. Secy. for Richard A. Liddy2003-08-29