X0303 4 2010-05-24 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 2010-05-24 4 S 0 10900 12.00 D 5314329 D Common Stock 2010-05-24 4 S 0 1500 12.005 D 5312829 D Common Stock 2010-05-24 4 S 0 100 12.007 D 5312729 D Common Stock 2010-05-24 4 S 0 100 12.0075 D 5312629 D Common Stock 2010-05-24 4 S 0 300 12.009 D 5312329 D Common Stock 2010-05-24 4 S 0 8935 12.01 D 5303394 D Common Stock 2010-05-24 4 S 0 500 12.015 D 5302894 D Common Stock 2010-05-24 4 S 0 3507 12.02 D 5299387 D Common Stock 2010-05-24 4 S 0 400 12.025 D 5298987 D Common Stock 2010-05-24 4 S 0 1404 12.03 D 5297583 D Common Stock 2010-05-24 4 S 0 200 12.035 D 5297383 D Common Stock 2010-05-24 4 S 0 300 12.037 D 5297083 D Common Stock 2010-05-24 4 S 0 300 12.0375 D 5296783 D Common Stock 2010-05-24 4 S 0 300 12.039 D 5296483 D Common Stock 2010-05-24 4 S 0 3603 12.04 D 5292880 D Common Stock 2010-05-24 4 S 0 200 12.045 D 5292680 D Common Stock 2010-05-24 4 S 0 1562 12.05 D 5291118 D Common Stock 2010-05-24 4 S 0 3200 12.06 D 5287918 D Common Stock 2010-05-24 4 S 0 2275 12.07 D 5285643 D Common Stock 2010-05-24 4 S 0 3907 12.08 D 5281736 D Common Stock 2010-05-24 4 S 0 945 12.09 D 52820791 D Common Stock 2010-05-24 4 S 0 6172 12.10 D 5274619 D Common Stock 2010-05-24 4 S 0 200 12.107 D 5274419 D Common Stock 2010-05-24 4 S 0 300 12.1075 D 5274119 D Common Stock 2010-05-24 4 S 0 200 12.109 D 5273919 D Common Stock 2010-05-24 4 S 0 5307 12.11 D 5268612 D Common Stock 2010-05-24 4 S 0 2146 12.12 D 5266466 D Common Stock 2010-05-24 4 S 0 100 12.125 D 5266366 D Common Stock 2010-05-24 4 S 0 100 12.14 D 5266266 D Common Stock 2010-05-24 4 S 0 200 12.145 D 5266066 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) 2010-05-26