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 1200 15.03 D 6232348 D Common Stock 2010-02-16 4 S 0 700 15.04 D 6231648 D Common Stock 2010-02-16 4 S 0 1600 15.05 D 6230048 D Common Stock 2010-02-16 4 S 0 700 15.06 D 6229348 D Common Stock 2010-02-16 4 S 0 800 15.07 D 6228548 D Common Stock 2010-02-16 4 S 0 3000 15.101 D 6225548 D Common Stock 2010-02-16 4 S 0 350 15.169 D 62251198 D Common Stock 2010-02-16 4 S 0 23 15.186 D 6225175 D Common Stock 2010-02-16 4 S 0 1793 15.20 D 6223382 D Common Stock 2010-02-16 4 S 0 200 15.201 D 6223182 D Common Stock 2010-02-16 4 S 0 100 15.207 D 6223082 D Common Stock 2010-02-16 4 S 0 803 15.21 D 6222279 D Common Stock 2010-02-16 4 S 0 1300 15.214 D 6220979 D Common Stock 2010-02-16 4 S 0 2350 15.22 D 6218629 D Common Stock 2010-02-16 4 S 0 5104 15.23 D 6213525 D Common Stock 2010-02-16 4 S 0 600 15.2325 D 6212925 D Common Stock 2010-02-16 4 S 0 2300 15.2345 D 6210625 D Common Stock 2010-02-16 4 S 0 2000 15.235 D 6208625 D Common Stock 2010-02-16 4 S 0 100 15.24 D 6208525 D Common Stock 2010-02-16 4 S 0 1200 15.25 D 6207325 D Common Stock 2010-02-16 4 S 0 450 15.26 D 6206875 D Common Stock 2010-02-16 4 S 0 200 15.27 D 6206675 D Common Stock 2010-02-16 4 S 0 1000 15.28 D 6205675 D Common Stock 2010-02-16 4 S 0 1900 15.2801 D 6203775 D Common Stock 2010-02-16 4 S 0 2000 15.2835 D 6201775 D Common Stock 2010-02-16 4 S 0 1779 15.29 D 6199996 D Common Stock 2010-02-16 4 S 0 1300 15.30 D 6198696 D Common Stock 2010-02-16 4 S 0 21 15.31 D 6198675 D Common Stock 2010-02-16 4 S 0 1100 15.33 D 6197575 D Common Stock 2010-02-16 4 S 0 900 15.3315 D 6196675 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