X0303 4 2010-02-01 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 2010-02-01 4 S 0 2000 13.0301 D 6381680 D Common Stock 2010-02-01 4 S 0 500 13.0701 D 6381180 D Common Stock 2010-02-01 4 S 0 1100 13.09 D 6380080 D Common Stock 2010-02-01 4 S 0 605 13.12 D 6379475 D Common Stock 2010-02-01 4 S 0 300 13.13 D 6379175 D Common Stock 2010-02-01 4 S 0 1713 13.146 D 6377462 D Common Stock 2010-02-01 4 S 0 2587 13.15 D 6374875 D Common Stock 2010-02-01 4 S 0 1595 13.1594 D 6373280 D Common Stock 2010-02-01 4 S 0 100 13.16 D 6373180 D Common Stock 2010-02-01 4 S 0 2100 13.20 D 6371080 D Common Stock 2010-02-01 4 S 0 1300 13.21 D 6369780 D Common Stock 2010-02-01 4 S 0 1900 13.2105 D 6367880 D Common Stock 2010-02-01 4 S 0 600 13.22 D 6367280 D Common Stock 2010-02-01 4 S 0 600 13.23 D 6366680 D Common Stock 2010-02-01 4 S 0 400 13.24 D 6366280 D Common Stock 2010-02-01 4 S 0 4400 13.25 D 6361880 D Common Stock 2010-02-01 4 S 0 600 13.251 D 6361280 D Common Stock 2010-02-01 4 S 0 100 13.26 D 6361180 D Common Stock 2010-02-01 4 S 0 3100 13.30 D 6358080 D Common Stock 2010-02-01 4 S 0 600 13.301 D 6357480 D Common Stock 2010-02-01 4 S 0 900 13.31 D 6356580 D Common Stock 2010-02-01 4 S 0 1970 13.316 D 6354610 D Common Stock 2010-02-01 4 S 0 1400 13.316 D 6353210 D Common Stock 2010-02-01 4 S 0 2280 13.32 D 6350930 D Common Stock 2010-02-01 4 S 0 1900 13.32 D 6349030 D Common Stock 2010-02-01 4 S 0 1450 13.33 D 6347580 D Common Stock 2010-02-01 4 S 0 100 13.33 D 6347480 D Common Stock 2010-02-01 4 S 0 1600 13.34 D 6345880 D Common Stock 2010-02-01 4 S 0 700 13.35 D 6345180 D Common Stock 2010-02-01 4 S 0 1600 13.36 D 6343580 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) 2010-02-02