X0303 4 2009-12-21 0 0000927003 ADVANCED ENERGY INDUSTRIES INC AEIS 0001228910 SCHATZ DOUGLAS S & SCHATZ JILL E FAMILY TRUST PO BOX 481 FORT COLLINS CO 80522 0 0 1 0 0001007705 SCHATZ DOUGLAS S P.O. BOX 481 FORT COLLINS CO 80522 1 0 0 0 0001328181 Schatz Jill E P.O. BOX 481 FORT COLLINS CO 80522 0 0 1 0 Common Stock 2009-12-21 4 S 0 1700 13.44 D 7032502 D Common Stock 2009-12-21 4 S 0 100 13.45 D 7032402 D Common Stock 2009-12-21 4 S 0 300 13.46 D 7032102 D Common Stock 2009-12-21 4 S 0 900 13.47 D 7031202 D Common Stock 2009-12-21 4 S 0 1000 13.49 D 7030202 D Common Stock 2009-12-21 4 S 0 1400 13.53 D 7028802 D Common Stock 2009-12-21 4 S 0 700 13.54 D 7028102 D Common Stock 2009-12-21 4 S 0 3300 13.55 D 7024802 D Common Stock 2009-12-21 4 S 0 3372 13.57 D 7021430 D Common Stock 2009-12-21 4 S 0 502 13.58 D 7020928 D Common Stock 2009-12-21 4 S 0 200 13.59 D 7020728 D Common Stock 2009-12-21 4 S 0 700 13.60 D 7020028 D Common Stock 2009-12-21 4 S 0 626 13.61 D 7019402 D Common Stock 2009-12-21 4 S 0 3200 13.62 D 7016202 D Common Stock 2009-12-21 4 S 0 2100 13.63 D 7014102 D Common Stock 2009-12-21 4 S 0 6200 13.64 D 7007902 D Common Stock 2009-12-21 4 S 0 2000 13.6401 D 7005902 D Common Stock 2009-12-21 4 S 0 200 13.645 D 7005702 D Common Stock 2009-12-21 4 S 0 1400 13.65 D 7004302 D Common Stock 2009-12-21 4 S 0 400 13.66 D 7003902 D Common Stock 2009-12-21 4 S 0 600 13.67 D 7003302 D Common Stock 2009-12-21 4 S 0 900 13.68 D 7002402 D Common Stock 2009-12-21 4 S 0 200 13.69 D 7002202 D Common Stock 2009-12-21 4 S 0 3800 13.75 D 6998402 D Common Stock 2009-12-21 4 S 0 1100 13.76 D 6997302 D Common Stock 2009-12-21 4 S 0 100 13.77 D 6997202 D Common Stock 2009-12-21 4 S 0 2400 13.8146 D 6994802 D Common Stock 2009-12-21 4 S 0 600 13.82 D 6994202 D Common Stock 2009-12-21 4 S 0 4000 13.827 D 6990202 D Common Stock 2009-12-21 4 S 0 4000 13.837 D 6986202 D These shares are owned directly by Douglas S. Schatz & Jill E. Schatz Family Trust, a ten percent owner of the issuer, and indirectly by Douglas S. Schatz and Jill E. Schatz, co-trustees of the trust. Includes 26,350 shares of restricted stock units held directly by Douglas S. Schatz, who is a director of the Issuer. The Sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan. /S/ Thomas O. McGimpsey (Attorney-in-Fact) 2009-12-23