X0202 4 2004-08-18 0 0001026448 IMPAC MEDICAL SYSTEMS INC IMPC 0001279997 IGSB IEP I LP 1485 EAST VALLEY ROAD, SUITE H SANTA BARBARA CA 93108 0 0 0 1 13(d) group member - >10% Common Stock 2004-08-18 4 P 0 86416 10.1352 A 892088 I by IGSB-Karan I, LLC Common Stock 2004-08-18 4 P 0 60000 10.1352 A 952088 I by IGSB-Keenan I, LLC Common Stock 2004-08-18 4 P 0 58920 10.0310 A 1011008 I by IGSB-Karan I, LLC Common Stock 2004-08-18 4 P 0 40000 10.0310 A 1051008 I by IGSB-Keenan I, LLC These securities are held in the name of IGSB-Karan I, LLC and are reported by IGSB IEP I, L.P. in its capacity as a controlling member of IGSB-Karan I, LLC. These securities are held in the name of IGSB-Keenan I, LLC and are reported by IGSB IEP I, L.P. in its capacity as a controlling member of IGSB-Keenan I, LLC. IGSB IEP I, L.P. By: IGSB, LLC, its General Partner, By: Luise M. Phelps, President, By: /s/ Kimberly Shea, attorney-in-fact 2004-08-20