X0201 4 2004-01-13 0 0000772891 ENGINEERED SUPPORT SYSTEMS INC EASI 0001249021 LANDMANN STEVEN J C/O ENGINEERED SUPPORT SYSTEMS INC 201 EVANS LANE ST LOUIS MO 63121 0 1 0 0 VP-Finance & Controller Common Stock 2004-01-13 4 M 0 12500 19.067 A 13774 D Option to Purchase 19.067 2004-01-13 4 X 0 12500 19.067 D 2002-07-24 2007-07-23 Common 12500 55000 D Mr. Landmann also indirectly owns 528 shares of common stock through the Company's ESOP. /s/ Steven J. Landmann 2004-01-14