X0202 4/A 2003-12-29 2003-12-29 0 0000790708 IMPCO TECHNOLOGIES INC IMCO 0001137060 STEMMLER ROBERT 16804 GRIDLEY PLACE CERRITOS CA 90703 1 1 0 0 Pres, CEO, Chairman Common Stock 2003-12-29 4 D 0 23829 8.81 D 87401 D Common Stock 2003-12-29 4 M 0 10002 4.69 A 97403 D Common Stock 2003-12-29 4 M 0 10300 3.50 A 107703 D Common Stock 2003-12-29 4 M 0 14528 4.27 A 122231 D Common Stock 2003-12-29 4 M 0 15264 4.27 A 137495 D Employee Stock Options 4.69 2003-12-29 4 M 0 10002 4.69 A 1997-01-11 2006-01-11 Common Stock 10002 954752 D Employee Stock Options 3.50 2003-12-29 4 M 0 10300 3.5 A 1998-11-07 2006-11-07 Common Stock 10300 944452 D Employee Stock Options 4.27 2003-12-29 4 M 0 14528 4.27 A 1998-11-22 2006-11-22 Common Stock 14528 929924 D Employee Stock Options 4.27 2003-12-29 4 M 0 15264 4.27 A 1999-05-22 2007-05-22 Common Stock 15264 914660 D Represents exempt transfer of previously owned shares in satisfaction of exercise price as permitted by the terms of the plan and Rule 16b-3(e). Robert M. Stemmler 2004-05-03