X0303 4 2010-03-15 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 2010-03-15 4 S 0 900 15.9511 D 5930329 D Common Stock 2010-03-15 4 S 0 400 15.956 D 5929929 D Common Stock 2010-03-15 4 S 0 700 15.96 D 5929229 D Common Stock 2010-03-15 4 S 0 2405 15.97 D 5926824 D Common Stock 2010-03-15 4 S 0 3712 15.98 D 5923112 D Common Stock 2010-03-15 4 S 0 2000 15.9801 D 5921112 D Common Stock 2010-03-15 4 S 0 800 15.99 D 5920312 D Common Stock 2010-03-15 4 S 0 1900 15.991 D 5918412 D Common Stock 2010-03-15 4 S 0 3388 16.00 D 5915024 D Common Stock 2010-03-15 4 S 0 500 16.012 D 5914524 D Common Stock 2010-03-15 4 S 0 200 16.0155 D 5914324 D Common Stock 2010-03-15 4 S 0 1000 16.03 D 5913324 D Common Stock 2010-03-15 4 S 0 1000 16.0301 D 5912324 D Common Stock 2010-03-15 4 S 0 500 16.0515 D 5911824 D Common Stock 2010-03-15 4 S 0 500 16.07 D 5911324 D Common Stock 2010-03-15 4 S 0 1000 16.08 D 5910324 D Common Stock 2010-03-15 4 S 0 3300 16.10 D 5907024 D Common Stock 2010-03-15 4 S 0 100 16.1005 D 5906924 D Common Stock 2010-03-15 4 S 0 1100 16.105 D 5905824 D Common Stock 2010-03-15 4 S 0 500 16.11 D 5905324 D Common Stock 2010-03-15 4 S 0 200 16.13 D 5905124 D Common Stock 2010-03-15 4 S 0 500 16.1355 D 5904624 D Common Stock 2010-03-15 4 S 0 500 16.27 D 5904124 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) 2010-03-17