X0303 4 2010-03-23 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 2010-03-23 4 S 0 200 14.67 D 5846558 D Common Stock 2010-03-23 4 S 0 100 14.69 D 5846458 D Common Stock 2010-03-23 4 S 0 100 14.72 D 5846358 D Common Stock 2010-03-23 4 S 0 100 14.74 D 5846258 D Common Stock 2010-03-23 4 S 0 700 14.75 D 5845558 D Common Stock 2010-03-23 4 S 0 100 14.76 D 5845458 D Common Stock 2010-03-23 4 S 0 700 14.78 D 5844758 D Common Stock 2010-03-23 4 S 0 300 14.785 D 5844458 D Common Stock 2010-03-23 4 S 0 300 14.79 D 5844158 D Common Stock 2010-03-23 4 S 0 100 14.80 D 5844058 D Common Stock 2010-03-23 4 S 0 300 14.81 D 5843758 D Common Stock 2010-03-23 4 S 0 800 14.83 D 5842958 D Common Stock 2010-03-23 4 S 0 300 14.84 D 5842658 D Common Stock 2010-03-23 4 S 0 700 14.85 D 5841958 D Common Stock 2010-03-23 4 S 0 100 14.88 D 5841858 D Common Stock 2010-03-23 4 S 0 600 14.92 D 5841258 D Common Stock 2010-03-23 4 S 0 500 14.93 D 5840758 D Common Stock 2010-03-23 4 S 0 300 14.95 D 5840458 D Common Stock 2010-03-23 4 S 0 400 14.96 D 5840058 D Common Stock 2010-03-23 4 S 0 100 14.97 D 5839958 D Common Stock 2010-03-23 4 S 0 100 14.98 D 5839858 D Common Stock 2010-03-23 4 S 0 1100 14.99 D 5838758 D Common Stock 2010-03-23 4 S 0 1200 15.01 D 5837558 D Common Stock 2010-03-23 4 S 0 600 15.02 D 5836958 D Common Stock 2010-03-23 4 S 0 350 15.04 D 5836608 D Common Stock 2010-03-23 4 S 0 5 15.05 D 5836603 D Common Stock 2010-03-23 4 S 0 200 15.06 D 5836403 D Common Stock 2010-03-23 4 S 0 757 15.07 D 5835646 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) 2010-03-24