X0202 4/A 2005-04-22 2005-04-22 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 1 1 0 Chief Executive Officer 0001328181 Schatz Jill E P.O. BOX 481 FORT COLLINS CO 80522 0 0 1 0 Common Stock 10657782 D Common Stock 26350 D These shares are owned directly by the Douglas S. Schatz & Jill E. Schatz Family Trust, a ten percent owner of the issuer, and indirectly by Douglas S. Schatz (as attorney-in-fact of Jill E Schatz) and Jill E. Schatz, co-trustees of the trust. The Form 4 filed on April 22, 2005 reported sales of an aggregate of 30,000 shares of common stock, which sales were not effected. Represents shares of restricted stock units held directly by Douglas S. Schatz. Douglas S. Schatz 2005-05-31 Douglas S. Schatz - Co-Trustee of the Douglas S. Schatz and Jill E. Schatz Family Trust 2005-05-31 Douglas S. Schatz - Attorney-in-Fact for Jill E. Schatz 2005-05-31