X0303 4 2010-05-04 0 0000927003 ADVANCED ENERGY INDUSTRIES INC AEIS 0001254354 ROHRS THOMAS M 1625 SHARP POINT DRIVE FORT COLLINS CO 80525 1 0 0 0 Common Stock 2010-05-04 4 A 0 6000 0.00 A 39000 D The restricted stock units granted on May 4, 2010 will vest in four equal annual installments beginning on the first anniversary of the grant date. Represents shares of restricted stock units. Mr. Rohrs has been granted a total of 39,000 RSUs in five grants: (A) 5,000 RSUs granted on May 24, 2006; (B) 16,000 RSUs granted on May 2, 2007; (C) 6,000 RSUs granted on May 7, 2008;(D) 6,000 RSUs granted on May 6, 2009 and (E) 6,000 RSUs granted on May 4, 2010. All RSUs vest in vest annually in four equal installments beginning 1 year after grant date. As of this filing, 17,250 RSU have vested. Thomas O. McGimpsey - Attorney-in-Fact 2010-05-06