X0306 4 2018-08-16 0 0000927003 ADVANCED ENERGY INDUSTRIES INC AEIS 0001245088 MCGIMPSEY THOMAS O 1625 SHARP POINT DRIVE FORT COLLINS CO 80525 0 1 0 0 EVP Interim CFO & Gen Counsel Common Stock 2018-08-16 4 S 0 8391 59.32 D 41777 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan. The price reported in Column 4 is an average price. These shares sold in multiple transactions at prices ranging from $58.95 to $59.78. The reporting person undertakes to provide to Advanced Energy, any security holder of Advanced Energy, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set for the in this footnote. Represents 11,513 shares of Restricted Stock units and 30,264 shares of common stock. /s/ Thomas O. McGimpsey 2018-08-20