X0303 4 2011-06-20 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 2011-06-20 4 S 0 1100 13.62 D 3513415 I By Trust Common Stock 2011-06-20 4 S 0 400 13.63 D 3513015 I By Trust Common Stock 2011-06-20 4 S 0 800 13.64 D 3512215 I By Trust Common Stock 2011-06-20 4 S 0 400 13.645 D 3511815 I By Trust Common Stock 2011-06-20 4 S 0 1600 13.65 D 3510215 I By Trust Common Stock 2011-06-20 4 S 0 900 13.655 D 3509315 I By Trust Common Stock 2011-06-20 4 S 0 100 13.657 D 3509215 I By Trust Common Stock 2011-06-20 4 S 0 1400 13.66 D 3507815 I By Trust Common Stock 2011-06-20 4 S 0 300 13.665 D 3507515 I By Trust Common Stock 2011-06-20 4 S 0 700 13.67 D 3506815 I By Trust Common Stock 2011-06-20 4 S 0 1000 13.675 D 3505815 I By Trust Common Stock 2011-06-20 4 S 0 1600 13.68 D 3504215 I By Trust Common Stock 2011-06-20 4 S 0 800 13.685 D 3503415 I By Trust Common Stock 2011-06-20 4 S 0 13.09 13.69 D 3502106 I By Trust Common Stock 2011-06-20 4 S 0 300 13.695 D 3501806 I By Trust Common Stock 2011-06-20 4 S 0 1500 13.70 D 3500306 I By Trust Common Stock 2011-06-20 4 S 0 100 13.705 D 3500206 I By Trust Common Stock 2011-06-20 4 S 0 300 13.707 D 3499906 I By Trust Common Stock 2011-06-20 4 S 0 2775 13.71 D 3497131 I By Trust Common Stock 2011-06-20 4 S 0 400 13.715 D 3496731 I By Trust Common Stock 2011-06-20 4 S 0 2114 13.72 D 3494617 I By Trust Common Stock 2011-06-20 4 S 0 100 13.725 D 3494517 I By Trust Common Stock 2011-06-20 4 S 0 900 13.73 D 3493617 I By Trust Common Stock 2011-06-20 4 S 0 100 13.735 D 3493517 I By Trust Common Stock 2011-06-20 4 S 0 100 13.7375 D 3493417 I By Trust Common Stock 2011-06-20 4 S 0 5810 13.74 D 3487607 I By Trust Common Stock 2011-06-20 4 S 0 100 13.745 D 3487507 I By Trust Common Stock 2011-06-20 4 S 0 1500 13.75 D 3486007 I By Trust Common Stock 2011-06-20 4 S 0 3510 13.76 D 3482497 I By Trust Common Stock 2011-06-20 4 S 0 300 13.77 D 3482197 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) 2011-06-21