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 0 300 10.33 D 8715335 D Common Stock 2009-01-06 4 S 0 100 10.34 D 8715235 D Common Stock 2009-01-06 4 S 0 400 10.35 D 8714835 D Common Stock 2009-01-06 4 S 0 1400 10.37 D 8713435 D Common Stock 2009-01-06 4 S 0 600 10.38 D 8712835 D Common Stock 2009-01-06 4 S 0 100 10.40 D 8712735 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