X0303 4 2009-01-06 0000927003 ADVANCED ENERGY INDUSTRIES INC AEIS 0001228910 SCHATZ DOUGLAS S & SCHATZ JILL E FAMILY TRUST P.O. BOX 481 FORT COLLINS CO 80522 0 0 1 0 0001007705 SCHATZ DOUGLAS S P.O. BOX 481 FORT COLLINS CO 80522 1 0 1 0 0001328181 Schatz Jill E P.O. BOX 481 FORT COLLINS CO 80522 0 0 1 0 Common Stock 2009-01-06 4 S 0 3500 10.00 D 8748735 D Common Stock 2009-01-06 4 S 0 2000 10.01 D 8746735 D Common Stock 2009-01-06 4 S 0 800 10.02 D 8745935 D Common Stock 2009-01-06 4 S 0 1100 10.03 D 8744835 D Common Stock 2009-01-06 4 S 0 400 10.04 D 8744435 D Common Stock 2009-01-06 4 S 0 100 10.05 D 8744335 D Common Stock 2009-01-06 4 S 0 300 10.06 D 8744035 D Common Stock 2009-01-06 4 S 0 1000 10.07 D 8743035 D Common Stock 2009-01-06 4 S 0 1500 10.08 D 8741535 D Common Stock 2009-01-06 4 S 0 2700 10.09 D 8738835 D Common Stock 2009-01-06 4 S 0 2800 10.10 D 8736035 D Common Stock 2009-01-06 4 S 0 4600 10.11 D 8731435 D Common Stock 2009-01-06 4 S 0 3300 10.12 D 8728135 D Common Stock 2009-01-06 4 S 0 1500 10.13 D 8726635 D Common Stock 2009-01-06 4 S 0 300 10.14 D 8726335 D Common Stock 2009-01-06 4 S 0 700 10.15 D 8725635 D Common Stock 2009-01-06 4 S 0 600 10.16 D 8725035 D Common Stock 2009-01-06 4 S 0 1200 10.17 D 8723835 D Common Stock 2009-01-06 4 S 0 200 10.18 D 8723635 D Common Stock 2009-01-06 4 S 0 1300 10.19 D 8722335 D Common Stock 2009-01-06 4 S 0 700 10.20 D 8721635 D Common Stock 2009-01-06 4 S 0 200 10.21 D 8721435 D Common Stock 2009-01-06 4 S 0 100 10.22 D 8721335 D Common Stock 2009-01-06 4 S 0 100 10.23 D 8721235 D Common Stock 2009-01-06 4 S 0 500 10.27 D 8720735 D Common Stock 2009-01-06 4 S 0 700 10.29 D 8720035 D Common Stock 2009-01-06 4 S 0 200 10.30 D 8719835 D Common Stock 2009-01-06 4 S 0 500 10.31 D 8719335 D Common Stock 2009-01-06 4 S 0 3700 10.32 D 8715635 D Common Stock 26350 D The sales reported in this Form 4 were effected pursuant to Rule 10b5-1 trading plan adopted by the reporting persons on November 26, 2008. 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. Represents shares of restricted stock units held directly by Douglas S. Schatz, who is a director of the Issuer. /s/ John D. Pirnot as Attorney-in-Fact 2009-01-08 /s/ John D. Pirnot as Attorney-in-Fact 2009-01-08 /s/ John D. Pirnot as Attorney-in-Fact 2009-01-08