X0303 4 2011-07-18 0 0000927003 ADVANCED ENERGY INDUSTRIES INC AEIS 0001007705 SCHATZ DOUGLAS S P.O. BOX 481 FORT COLLINS CO 80522 1 0 0 0 Common Stock 2011-07-18 4 S 0 18 12.01 D 3366048 I By Trust Common Stock 2011-07-18 4 S 0 5 12.02 D 3366043 I By Trust Common Stock 2011-07-18 4 S 0 1839 12.03 D 3364204 I By Trust Common Stock 2011-07-18 4 S 0 300 12.035 D 3363904 I By Trust Common Stock 2011-07-18 4 S 0 2300 12.04 D 3361604 I By Trust Common Stock 2011-07-18 4 S 0 100 12.045 D 3361504 I By Trust Common Stock 2011-07-18 4 S 0 800 12.05 D 3360704 I By Trust Common Stock 2011-07-18 4 S 0 300 12.055 D 3360404 I By Trust Common Stock 2011-07-18 4 S 0 600 12.06 D 3359804 I By Trust Common Stock 2011-07-18 4 S 0 1000 12.065 D 3358804 I By Trust Common Stock 2011-07-18 4 S 0 100 12.07 D 3358704 I By Trust Common Stock 2011-07-18 4 S 0 700 12.095 D 3358004 I By Trust Common Stock 2011-07-18 4 S 0 1400 12.10 D 3356604 I By Trust Common Stock 2011-07-18 4 S 0 1500 12.115 D 3355104 I By Trust Common Stock 2011-07-18 4 S 0 100 12.116 D 3355004 I By Trust Common Stock 2011-07-18 4 S 0 200 12.119 D 3354804 I By Trust Common Stock 2011-07-18 4 S 0 2373 12.12 D 3352431 I By Trust Common Stock 2011-07-18 4 S 0 100 12.13 D 3352331 I By Trust Common Stock 2011-07-18 4 S 0 300 12.135 D 3352031 I By Trust Common Stock 2011-07-18 4 S 0 100 12.137 D 3351931 I By Trust Common Stock 2011-07-18 4 S 0 100 12.1375 D 3351831 I By Trust Common Stock 2011-07-18 4 S 0 1200 12.14 D 3350631 I By Trust Common Stock 2011-07-18 4 S 0 2300 12.145 D 3348331 I By Trust Common Stock 2011-07-18 4 S 0 500 12.1475 D 3347831 I By Trust Common Stock 2011-07-18 4 S 0 200 12.149 D 3347631 I By Trust Common Stock 2011-07-18 4 S 0 3800 12.15 D 3343831 I By Trust Common Stock 2011-07-18 4 S 0 400 12.155 D 3343431 I By Trust Common Stock 2011-07-18 4 S 0 750 12.16 D 3342681 I By Trust Common Stock 2011-07-18 4 S 0 400 12.165 D 3342281 I By Trust Common Stock 2011-07-18 4 S 0 100 12.169 D 3342181 I By Trust Douglas S. Schatz and Jill E. Schatz, husband and wife, are co-trustees of the Family Trust and may be deemed to be indirect beneficial owners of the shares of AEIS common stock held directly by the Family Trust. Douglas S. Schatz is a director of AEIS. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan. /s/ Thomas O. McGimpsey (Attorney-in-Fact) 2011-07-19