X0303 4 2010-04-12 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 2010-04-12 4 S 0 2069 14.98 D 5802453 D Common Stock 2010-04-12 4 S 0 5303 14.99 D 5797150 D Common Stock 2010-04-12 4 S 0 1402 15.00 D 5795748 D Common Stock 2010-04-12 4 S 0 3000 15.09 D 5792748 D Common Stock 2010-04-12 4 S 0 2900 15.10 D 5789848 D Common Stock 2010-04-12 4 S 0 400 15.11 D 5789448 D Common Stock 2010-04-12 4 S 0 1700 15.12 D 5787748 D Common Stock 2010-04-12 4 S 0 100 15.13 D 5787648 D Common Stock 2010-04-12 4 S 0 7000 15.14 D 5780648 D Common Stock 2010-04-12 4 S 0 900 15.145 D 5779748 D Common Stock 2010-04-12 4 S 0 1100 15.15 D 5778648 D Common Stock 2010-04-12 4 S 0 2500 15.16 D 5776148 D Common Stock 2010-04-12 4 S 0 1500 15.17 D 5774648 D Common Stock 2010-04-12 4 S 0 200 15.18 D 5774448 D Common Stock 2010-04-12 4 S 0 200 15.19 D 5774248 D Common Stock 2010-04-12 4 S 0 200 15.20 D 5774048 D Common Stock 2010-04-12 4 S 0 200 15.21 D 5773848 D Common Stock 2010-04-12 4 S 0 900 15.22 D 5772948 D Common Stock 2010-04-12 4 S 0 500 15.23 D 5772448 D Common Stock 2010-04-12 4 S 0 200 15.25 D 5772248 D Common Stock 2010-04-12 4 S 0 100 15.26 D 5772148 D Common Stock 2010-04-12 4 S 0 9 15.30 D 5772139 D Common Stock 2010-04-12 4 S 0 300 15.31 D 5771839 D Common Stock 2010-04-12 4 S 0 353 15.32 D 5771486 D Common Stock 2010-04-12 4 S 0 200 15.33 D 5771286 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) 2010-04-14