X0202 4 2005-04-07 0 0000721773 ELECTRONIC CLEARING HOUSE INC ECHO 0001312548 Discovery Group I, LLC HYATT CENTER, 24TH FLOOR 71 SOUTH WACKER CHICAGO IL 60606 0 0 1 0 Common Stock 2005-04-07 4 P 0 9000 8.35 A 659188 I By Discovery Equity Partners, L.P. Common Stock 2005-04-07 4 P 0 1000 8.35 A 660188 I By Pleiades Investment Partners - D, L.P. Common Stock 2005-04-07 4 P 0 270 8.37 A 660458 I By Discovery Equity Partners, L.P. Common Stock 2005-04-07 4 P 0 30 8.37 A 660488 I By Pleiades Investment Partners - D, L.P. Common Stock 2005-04-07 4 P 0 3420 8.38 A 663908 I By Discovery Equity Partners, L.P. Common Stock 2005-04-07 4 P 0 380 8.38 A 664288 I By Pleiades Investment Partners - D, L.P. Common Stock 2005-04-07 4 P 0 1530 8.39 A 665818 I By Discovery Equity Partners, L.P. Common Stock 2005-04-07 4 P 0 170 8.39 A 665988 I By Pleiades Investment Partners - D, L.P. Common Stock 2005-04-07 4 P 0 1620 8.40 A 667608 I By Discovery Equity Partners, L.P. Common Stock 2005-04-07 4 P 0 180 8.40 A 667788 I By Pleiades Investment Partners - D, L.P. The reporting person is the general partner of the limited partnership, which is a discretionary client of the reporting person, that owns the reported securities. The reporting person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein. The reporting person is an investment manager for the limited partnership, which is a discretionary client of the reporting person, that owns the reported securities. The reporting person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein. Michael R. Murphy, Managing Member 2005-04-11