X0202 4 2006-11-01 0 0001138804 UNICA CORP UNCA 0001334359 Cheung David 170 TRACER LANE WALTHAM MA 02451 0 0 1 1 Founder Common Stock 2006-11-01 4 S 0 233 11.11 D 703923 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 498 11.10 D 703425 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 446 11.09 D 702979 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 300 11.08 D 702679 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 100 11.07 D 702579 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 320 11.06 D 702259 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 200 11.01 D 702059 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 766 11.00 D 701293 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 50 10.92 D 701243 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 150 10.91 D 701093 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 300 10.89 D 700793 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 50 10.88 D 700743 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 100 10.87 D 700643 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 951 10.85 D 699692 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 33 10.83 D 699659 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 99 10.82 D 699560 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 167 10.80 D 699393 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 100 10.77 D 699293 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 100 10.74 D 699193 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 100 10.72 D 699093 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 115 10.70 D 698978 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 100 10.69 D 698878 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 100 10.68 D 698778 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 150 10.66 D 698628 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 950 10.65 D 697678 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 150 10.63 D 697528 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 350 10.62 D 697178 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 100 10.61 D 697078 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 50 10.58 D 697028 I by Angela Cheung Living Trust Common Stock 2006-11-01 4 S 0 50 10.57 D 696978 I by Angela Cheung Living Trust All sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan dated December 9, 2005. This Form 4 is report THREE of FOUR filed to report sales of shares by the reporting person on November 1, 2006. Such Forms 4 are intended to be read together. /s/ Michael Pellini, by power of attorney 2006-11-02