X0306 4 2013-10-28 0 0000927003 ADVANCED ENERGY INDUSTRIES INC AEIS 0001365647 Herron Danny C 1625 SHARP POINT DRIVE FORT COLLINS CO 80525 0 1 0 0 Executive VP & CFO Common Stock 2013-10-28 4 F 0 298 19.57 D 25849 D Payment of tax liability by withholding securities incident to vesting of Restricted Stock. Represents 25,404 shares granted as Restricted Stock units (RSUs)and 445 shares of Employee Stock Purchase Plan shares. As of this transaction date, the restricted stock units have vested as to 18,369 shares. /s/ Thomas O. McGimpsey - Attorney-in-Fact 2013-10-30