X0303 4 2010-02-16 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 2010-02-16 4 S 0 200 15.40 D 6196475 D Common Stock 2010-02-16 4 S 0 100 15.41 D 6196375 D Common Stock 2010-02-16 4 S 0 100 15.42 D 6196275 D Common Stock 2010-02-16 4 S 0 800 15.43 D 6195475 D Common Stock 2010-02-16 4 S 0 800 15.44 D 6194675 D Common Stock 2010-02-16 4 S 0 200 15.45 D 6194475 D Common Stock 2010-02-16 4 S 0 200 15.475 D 6194275 D Common Stock 2010-02-16 4 S 0 8009 15.50 D 6186266 D Common Stock 2010-02-16 4 S 0 1200 15.5001 D 6185066 D Common Stock 2010-02-16 4 S 0 191 15.51 D 6184875 D Common Stock 2010-02-16 4 S 0 2900 15.53 D 6181975 D Common Stock 2010-02-16 4 S 0 100 15.54 D 6181875 D Common Stock 2010-02-16 4 S 0 2500 15.55 D 6179375 D Common Stock 2010-02-16 4 S 0 2900 15.5501 D 6176475 D Common Stock 2010-02-16 4 S 0 3320 15.56 D 6173155 D Common Stock 2010-02-16 4 S 0 480 15.57 D 6172675 D Common Stock 2010-02-16 4 S 0 100 15.59 D 6172575 D Common Stock 2010-02-16 4 S 0 900 15.60 D 6171675 D Common Stock 2010-02-16 4 S 0 100 15.61 D 6171575 D Common Stock 2010-02-16 4 S 0 100 15.62 D 6171475 D Common Stock 2010-02-16 4 S 0 1000 15.63 D 6170475 D Common Stock 2010-02-16 4 S 0 1000 15.69 D 6169475 D Common Stock 2010-02-16 4 S 0 200 15.71 D 6169275 D Common Stock 2010-02-16 4 S 0 100 15.72 D 6169175 D Common Stock 2010-02-16 4 S 0 1000 15.89 D 6168175 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) 2010-02-18